8-piece drill bit limiting tool and instrument set 3, 4, 5, 6, 8, 10, 12, 16 mm drill bit stop ring assortment for consistent drill bits (8-piec

8-piece drill bit limiting tool and instrument set 3, 4, 5, 6, 8, 10, 12, 16 mm drill bit stop ring assortment for consistent drill bits (8-piec Description

Material: Carbon steel Inner diameter: 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 16 mm Primarily for fixing the drill bit, limiting the drilling depth, and ensuring consistent hole depths. Compatible with standard drill bits and drills. The collared threaded shank does not damage the drill bits. Product description About the drill bit holder: General tools and instruments, stop ring Specifications: Name: Hex drill chuck Material: Carbon steel Finish: Black Specification: 3, 4, 5, 6, 8, 10, 12, 16 mm Function of the stop ring: Primarily for fixing the drill bit, limiting the drilling depth, and ensuring consistent hole depths. Especially suitable for use in round wooden mortise holes. Scope of delivery: 8x chucks 1x hex key