CESFONJER 2 Set Drill Stop, 16 Pcs 3 16mm Bit Depth Stop Collar Ring Positioner Spacing Locator Woodworking with Hex Wrench

Material: Carbon Steel. 16 Pcs Drill Bit Depth Stop Collar, clamping device, positioner. Size: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm. Durable Alloy Steel Setscrew Type Collar will stay sturdy when tightened and is specially designed not to damage the bits. Bit Limit Rings are used as a Shaft Collar on machinery and can be used on twist drill bits or brad point drills or any type of bit to prevent excessive drill bit penetration and for any job that uses a bit and needs precision. The Drill Stop Bit Collar Set will quickly and easily help you drill holes to exact depths and are ideal for production work and repeated drilling by positively locking anywhere along the bit. With the Setscrew tight the collar will remain securely in place exactly where you put them and will accurately control the depth of the hole you are drilling. Package include: 2 x Allen wrench hex key, 16 x Drill bit stop collars.