Attributes

Brand	-
Category	Hardware & Tools / Other Machinery & Hardware (New)
Origin	-
Material	High-Grade Bronze
Shank Type	JTO (Jacobs Taper 0)
Collet Capacity	3.17mm
Total Length	45mm
Outer Diameter	12mm
Finish	Polished Bronze
Compatibility	Mini Drill Press, Rotary Tools
Mounting Style	Detachable Sleeve
Precision Grade	Runout < 0.02mm
Package Contents	1x Adapter Sleeve, 1x Storage Case

6 reviews

Anonymous

Mar 18, 2026

Rating: 5/5

Perfect fit for my mini drill press

This bronze sleeve adapter fits perfectly into my JTO spindle. The 3.17mm collet holds my bits securely without any wobble. Great quality for the price.

Anonymous

Mar 18, 2026

Rating: 5/5

Excellent for precision work

I use this for jewelry making and the runout is negligible. The bronze material seems durable and resists wear better than steel adapters I've used before.

Anonymous

Mar 10, 2026

Rating: 5/5

Great upgrade component

Upgraded my hobby CNC setup with this. The bronze bushing provides smooth operation and reduces vibration significantly during high-speed drilling.

Anonymous

Mar 05, 2026

Rating: 4/5

Solid construction

Heavy duty feel and good weight. The taper seats firmly. Only minor issue is the packaging was a bit loose, but the product itself is flawless.

Anonymous

Mar 05, 2026

Rating: 5/5

Exactly what I needed

Converted my old motor to accept modern 3.17mm shanks easily. The detachable design makes swapping tools quick and efficient.

Anonymous

Mar 03, 2026

Rating: 4/5

Good quality, slightly tight at first

The machining looks very precise. It was a bit tight to insert initially, but after a few uses, it slides in smoothly. Holds torque well.

5 FAQ

Q: What is the maximum RPM this sleeve can handle?

A: While the bronze material is durable, we recommend using this adapter at speeds up to 25,000 RPM for optimal safety and longevity. Always ensure the bit is balanced.

Q: Does it come with a wrench for tightening?

A: No, this is a sleeve adapter that relies on the friction fit of the Jacobs Taper. It does not require a wrench for installation, though you may need a drift key to remove it from the spindle.

Q: Will this fit a standard Dremel tool?

A: This adapter is designed for JTO (Jacobs Taper 0) spindles found on mini drill presses and specific motor shafts. It is not directly compatible with standard Dremel collets unless your Dremel has been modified to accept a JTO taper.

Q: Is the bronze plated or solid bronze?

A: The sleeve is manufactured from solid high-grade bronze alloy, not plated. This ensures consistent performance and wear resistance throughout the life of the product.

Q: Can I use 3mm bits in this 3.17mm adapter?

A: No, this adapter is specifically machined for 3.17mm (1/8 inch) shanks. Using a 3mm bit will result in slippage and potential damage. Please use a separate collet for 3mm bits.

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