Woodworking drill bit positioner: The double-hole design has greater stability, which can better lock the drill bit without the phenomenon of peak deflection. Depth collar of Drilling for Woodworking: Drill Limiter Rings are used as a shaft collar on machines and can be used on twist drills or brad tip drills or any type of over drill bits and for drill bits. jobs that use a drill bit and need precision. Drill Depth Control: The drill limit ring is made of premium stainless steel, anti-, et. Drill Positioner: It is made professional technology to guarantee the product and can work for a long time. Drill Ring: Mainly for fixing the drill bit, limiting the depth of drill holes, make hole depth consistent. Package List 8 x Drill Bit Collars Features - Size size: 1.70 x 1.00 x 0.80cm/0.67 x 0.39 x 0.31inch. - The drilling depth stopper can be fixed on the drill bit to limit the depth of the drill hole to ensure the same drilling depth. - Drill Limiter Rings are used as a shaft collar on machines and can be used on twist drills or twist drills brad tipped or any type of drill bits with excessive drill bit penetration and for jobs that use a drill bit and need precision. - Material: Stainless Steel. - Color: silver. - The depth stop collar fits high carbon steel drills and positively locks anywhere along the drill bit. As limited drilling ring, clamping device, positioner. - Specification: 3, 4, 5, 6, 7, 8, 9, 10 mm. - The ring Drill Boundary is made of premium stainless steel, anti - , and . - Can quickly and easily help you drill holes to exact depths and is ideal for production work and drilling repeated locking positively anywhere along the drill bit. Description of Goods Woodworking Drilling Depth Collar This item is made of premium material for a use and . Drilling depth control It adapts to a drill size of 3 to 10 mm. drill positioner It is designed mainly for fixing the drill bit, limiting the depth of the drill holes and making the hole depth consistent