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KomeStone K2 Elite Rock Tumbler Kit, 3 lb Barrel1 / 7
Product guide

KomeStone K2 Elite Rock Tumbler Kit, 3 lb Barrel

The KomeStone K2 Elite rock tumbler kit pairs a claimed 3 lb barrel with a brushless motor, three selectable speeds and a programmable timer. Its corded design and substantial barrel suit home hobby batches, while reports of leakage and mixed value feedback are worth weighing before purchase.

At a glance

  • Listing features describe a brushless motor and rubber 3 lb barrel, alongside a claimed noise-reduction cover.
  • Three selectable speeds and a programmable timer are described for setting tumbling stages. The listing also claims that settings are recalled after a power interruption.
  • An illustrated guide and supplies for starting a polishing batch are listed, including rocks and polishing grits.
Price
$110.48Save 15%

Reference price: $129.98

Price checked: Nov 13, 2026

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Often bought together

Pros and cons

Pros

  • The claimed 3 lb barrel provides more stated capacity than the 2 lb entry-level models used as the listing’s comparison.
  • The claimed timer and three speed settings allow stage-specific control without relying on a single fixed setting.
  • An illustrated guide and a range of starter supplies are included according to the package list.

Cons

  • Some customers report leakage, so buyers should consider where they will operate the tumbler and protect the surrounding surface.

Technical specifications

5 specifications
Identity
BrandKomeStone
ModelCA-KS0515RT46
Power and operation
Power configurationCorded Electric
Dimensions and listed weight
Dimensions and weight listed17.27 x 20.07 x 20.07 cm; 3.9 kg
Weight listed separately3.9 kg

What to know before buying

  • The listing presents quiet operation and noise reduction as manufacturer claims, not measured comparisons. Its timer is described as running for up to 9 days, with speed selection and settings recall after interrupted power. Customer comments include leakage reports and mixed views on value, so those reports may matter for long unattended cycles.

What’s in the box

Included
  • Tumbler machine and 3 lb barrel
  • 1 spare belt
  • 4 polishing grits
  • 1.5 m AC adapter and 1 lb of rocks
  • Illustrated tutorial guide
  • Sifter
  • Screwdriver
  • Jewellery fastenings

Who is it for?

A good fit for

  • Rock and jewellery hobbyists wanting a corded tumbler with a claimed 3 lb barrel and several speed settings.
  • Beginners or families looking for a kit that lists rough rocks, polishing grits and an illustrated guide.

Less suited to

  • Buyers who need confirmed leak-free operation or independently verified noise levels.
  • Anyone seeking a cordless polisher or a package with every listed supply confirmed before purchase.
KomeStone K2 Elite Rock Tumbler Kit, 3 lb Barrel · photo 2
Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 556 ratings
  • 5 stars73%73%
  • 4 stars9%9%
  • 3 stars5%5%
  • 2 stars2%2%
  • 1 star11%11%

Customer feedback highlights perceived quiet operation, ease of use, attractive polished results and helpful instructions. Some customers report leakage, and value opinions are mixed. These experiences are relevant to a corded tumbler intended for multi-day cycles, but they do not establish how frequently issues occur or verify the listing’s noise claims.

Positive themes

  • Customers describe operation as quiet and the controls as easy to use.
  • Customers report satisfaction with the instructions and the appearance of finished stones.

Negative themes

  • Some customers report leakage.

Mixed feedback

  • Opinions about value for money are mixed.

Frequently asked questions

What capacity does the KomeStone K2 Elite list?

The product feature text describes a 3 lb barrel. It says the kit includes 1 lb of rocks, so the stated barrel capacity is not the same as the included rough-rock quantity.

Can the tumbler be set for different polishing stages?

The listing describes three selectable speed settings and a programmable timer of up to 9 days. It also claims that the settings are recalled after a power interruption.

What supplies are listed with the kit?

The explicit component list names the tumbler and barrel, a spare belt, four polishing grits, an AC adapter, 1 lb of rocks, an illustrated guide, a sifter, a screwdriver and jewellery fastenings.

What do customers say about operation?

Customer feedback highlights quiet operation, ease of use and satisfaction with the instructions. Some report leakage, while opinions on value are mixed.

KomeStone K2 Elite Rock Tumbler Kit, 3 lb Barrel · photo 3
Additional product photo 3

Alternative options

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