7 Pcs 3-12mm Collar Ring Positioner Spacing Ring Locator Woodworking Drill Bit Hex Wrench,Default NO

Features:

Material: carbon steel

Inner diameter: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm

Specifications: 3-12mm + small wrench

Mainly used to fix the drill bit, limit the drilling depth, and make the drilling depth consistent.

Suitable for standard and brad-point bits

Fixing screw type collar does not damage the drill bit

This item is manufactured with premium material for durable and long-lasting use.

It\'s more convenient to roundwood mortise of use.

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