Aluminum Drill Collar Collars Wrench Review

Split Ring Stop Collar Set – The package includes 1/8", 3/16", 1/4", 5/16" 3/8", 7/16", 1/2" and 17/32" (3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 13 mm), and come with hex wrench. Aluminum Material – The Drill Depth Limit Ring is made of aluminum, durable and lightweight for long term durability. Requires 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. Applications - 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, can applied on twist drill bits, brad point drills or any types of bit to prevent excessive drill bit penetration. Usage - It is fixed on the drill bit to limit the depth df the drill hole that ensures the gole depth is consistent.