# CRAFTSMAN CMCS405B V20 Brushless 4.5 in. Circular Saw

The CRAFTSMAN V20 CMCS405B is a brushless, battery-powered circular saw with a 4.5-inch blade, listed at up to 4,500 no-load RPM. It is sold as a tool only, so the battery and charger are separate purchases.

- [Original product page](https://loonieperks.com/product/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- [View offer](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- Market: CA
- Language: en-CA
- Currency: CAD
- Brand: CRAFTSMAN
- Model: CMCS405B
- Category: Tools & Garden > Power Tools > Power Saws
- Price: 118.00 CAD
- Previous price: 159.00 CAD
- Discount: 26%
- Price checked: 2026-11-13T12:35:26.852Z
- Rating: 4.7 / 5
- Reviews: 95

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Brushless motor is rated for up to 4,500 no-load RPM.
- The listing describes a 4.5-inch blade for cutting 2x material at 90° and 1x at 45°.
- Front dust port, sliding rip fence and auxiliary handle are listed features.
- Electronic blade brake and on-board blade-key storage are claimed.

## Pros

- Compact 4.5-inch blade format is suited to smaller wood-cutting tasks and tighter spaces.
- Rip fence and auxiliary handle offer guidance and an additional grip point.
- Electronic blade brake and built-in blade-key storage add practical operating conveniences.

## Cons

- Battery and charger are sold separately, so this tool-only listing does not provide a complete cordless setup.

## Specifications

### Identity
- Brand: CRAFTSMAN
- Model: CMCS405B
### Power and operation
- Power configuration: Battery Powered
- Voltage: 20 volts
- No-load speed: 4500 rpm
- Blade teeth: 24
### Cutting
- Blade size: 4.5 in.
- Listed cutting angle: 45 degrees
- Blade shape: Round
- Recommended surface: Wood
- Blade material: Alloy Steel
### Features and materials
- Special features: Bevel Capability, Brake, Brushless, Lightweight
- Handle material: Plastic, Aluminum
- Colour: Black, Red
- Specification met: CE, OSHA
### Dimensions and installation
- Dimensions listed: 46.9L x 14W x 17.1H centimetres
- Weight listed: 3.09 kg

## Before you buy

- The listing identifies this as a 20-volt tool, while its battery disclaimer says 20 volts is maximum initial voltage and nominal voltage is 18 volts. Its listed 45-degree angle matches the stated bevel-cut capability, but the specification table does not clarify cutting capacity beyond the description's 1x-at-45° and 2x-at-90° claims. Confirm that the included saw alone meets your needs, since the battery and charger are sold separately.

## In the box

- CMCS405 V20 brushless RP 4.5 in. circular saw, quantity 1 (Included): The title identifies the product as tool only. Battery and charger are sold separately.

## A good fit for

- CRAFTSMAN V20 owners who already have a compatible battery and charger.
- DIY users making wood cuts where a compact 4.5-inch circular saw and listed bevel capability suit the work.
- Buyers who value a rip fence, auxiliary handle and electronic blade brake.

## Less suited to

- Buyers who need a battery and charger included in the same package.
- Buyers needing a saw explicitly specified here for materials other than wood or larger-blade cutting.

## Customer feedback

Customer feedback describes the saw as easy to control and useful for house projects, with positive comments about quality and performance. Those reported impressions are relevant to its intended DIY role, while the listed 4.5-inch blade and wood recommendation define a narrower scope than a general-purpose saw. Aggregate ratings are mostly five-star, but a smaller one-star share shows that experiences are not uniformly positive. The available feedback does not explain the reasons behind the ratings.
- Positive themes: Feedback describes good quality and useful performance for house projects.
- Positive themes: Customers are reported to appreciate ease of use and control.

## Frequently asked questions

### Does this listing include a battery and charger?
No. The product description says the battery and charger are sold separately, and the title identifies it as tool only.
### What cutting capacity does the listing describe?
It says the 4.5-inch blade can cut 2x material at 90° and 1x material at 45°.
### What features are listed for guided or controlled cutting?
The listing names an auxiliary handle, sliding rip fence, front dust port and electronic blade brake.
### What does the voltage information mean?
The listing gives 20 volts, while its disclaimer states that 20 volts is maximum initial battery voltage and nominal voltage is 18 volts.

## Alternative options

- [CRAFTSMAN V20 RP Cordless Circular Saw, 7-1/4 inch, Bare Tool Only \(CMCS551B\)](https://loonieperks.com/visit/craftsman-v20-rp-cmcs551b-cordless-circular-saw)
- [CRAFTSMAN V20 7-1/4-Inch Sliding Miter Saw Kit, Cordless \(CMCS714M1\) \| 4.0Ah Battery, Fast Charger, Single Bevel, 3,800 RPM, LED Cut Line, Carbide Blade, Wrench, Dust Bag, Lightweight \(CMCS714M1\)](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- [Mini Circular Saw with Laser Guide, 6 Blades 4-1/2", 5.8 A Corded \| 3500 RPM, 0°–45° Bevel, Dust Port, Cuts Wood, Soft Metal, and Tile for DIY Repairs, Renovations, Craft Projects](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- [Mini Circular Saw with 3 Blades, 3-3/8 in, 4.8 A Corded \| Laser guide, 4000 RPM, max cut 1-1/16 in, dust port and rip guide; for wood, soft metal, tile, plastic and PVC](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- [BLACK+DECKER 20V MAX\* POWERCONNECT 5-1/2 in. Cordless Circular Saw \(BDCCS20C\)](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- [Worx WX439L 4.5 Inch and 4.5 Amp One Hand Compact Circular Saw, Black and Orange](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- [Metabo HPT 7 1/4-Inch Circular Saw “Ripmax” Kit \| 6,800 RPM, 15-Amp Motor \| Dust Blower Function \| 24T Premium Framing VPR Blade \| Unique Cord Hook \| Carrying Bag \| 5-Year Warranty \| C7UR](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- [CRAFTSMAN CMCN616C1 V20\* 16GA CORDLESS FINISH NAILER KIT](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- [50 PCS Multitool Blades Oscillating Tool Blade for Metal and Wood \| Titanium Oscillating Tool Blade for Metal Nails, Wood and Plastic, Fit Dewalt Milwaukee Ryobi Rockwell Fein](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- [BLACK+DECKER 20V MAX\* POWERCONNECT Cordless Jig Saw \(BDCJS20C\)](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- [21V Cordless Mini Circular Saw, 4-1/2 Inch Compact Saw with 6.0Ah Battery and Fast Charger, 3 Saw Blades, 5600 RPM, Large Capacity Storage Bag, Max Cutting Depth 1-11/16 Inch at 90°, 1-1/8 Inch at 45°](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)
- [SOARFLY 21V 6-1/2" Cordless Circular Saw, Total 8000mAh, Laser Guide \| 2 x 4.0Ah batteries & fast charger, laser & rip guide, dust port, 2 x 24T blades, cuts lumber, plywood, PVC & plastic](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)

## Add-ons

- [CRALY 4-1/2 Inch 24&36 Teeth Wood Cutting Framing/Fine Finish Circular Saw Blade, 3/8 Inch Arbor, Carbide Tipped, Thin Kerf, Black Ice Coating, for Plywood, MDF, OSB, Laminated, 2-Pack\(C042436-2\)](https://loonieperks.com/visit/craftsman-cmcs405b-v20-brushless-4-5-inch-circular-saw)

## Images

![CRAFTSMAN CMCS405B V20 Brushless 4.5 in. Circular Saw — 1](https://loonieperks.com/i/bd2GPD3V1ebyrNfqkrd6qKMIVU9NwCcQyZnJgu0ss2_QotiAP3sTXWvpebWB8-9h-49Ty1Ym5dpNb3NhheW_K8e6AAgi3X4-Rv9cUdfkNFH2yOS11WZ8M1kS.jpg)

![CRAFTSMAN CMCS405B V20 Brushless 4.5 in. Circular Saw — 2](https://loonieperks.com/i/OJKN1aKQKjFAKfpiLstLxHPUL1Zi1Je4QgOYaeCG9bF7f_NWd1oLx4TOyzouk_a6umouUX_UL_0unJmFQJQmVu7_SQBUOEwWnto3afWYb-XwZhdIPhpdCySW.jpg)

![CRAFTSMAN CMCS405B V20 Brushless 4.5 in. Circular Saw — 3](https://loonieperks.com/i/rfqSF6m0epeLAL89jbTXcnjz1Km8XFKBNAP3TysAyE2FungGpNc27GGDRt0vAZ9F_GfK_Gc8L6jRctRB1wM9CxCR1B3JxjsKiRB48LRsacp8UA2-7HsaZQMm.jpg)

![CRAFTSMAN CMCS405B V20 Brushless 4.5 in. Circular Saw — 4](https://loonieperks.com/i/nXOsKuuEk4iuyob-1QQfrX6usHZCIz12p3KGnb_WkuRbcnQRtB0INtOc0JDWEa3Kl5kXPW373Y8Ho0aULc71UDwLzbfpaXQzVWLWUCes1NFyfgVktgDBItVi.jpg)

![CRAFTSMAN CMCS405B V20 Brushless 4.5 in. Circular Saw — 5](https://loonieperks.com/i/K6dyCi1p21cYhFrYxA2J65XtHpbJCIVOSajzw1rm32BzUGwBqgGIjmUT-kT4kLC-zJvZJ_5hSc8KfPpNw_S0hH8NqxMc6tZ6L9AU3aTA7Zilok9j4XsuftgT.jpg)

![CRAFTSMAN CMCS405B V20 Brushless 4.5 in. Circular Saw — 6](https://loonieperks.com/i/hXbUiEyuDnM8RvPBy_CbTIfwBsL-qGHVI7KDh7gBV77XHGcq-4JgtAN6pJU-qeBu6COww_tts_36mNL4dJ-N2q3zru22imeiamF3OA7CCtuHL0mrk-G0lOLV.jpg)

![CRAFTSMAN CMCS405B V20 Brushless 4.5 in. Circular Saw — 7](https://loonieperks.com/i/4Xtr1oWaRdl9iorA1vXUfdyFXbf9SZorOR4L-4i03Tqti_2G271z9Gv-tVElJCNRjy8D_LLv6AZe4gWyIboTlU1UwBgo6clxN4SOvwYsMVmED1sAo-7yPk40.jpg)