Drill Stop Set, Akozon 12pcs 3 16mm Stainless Steel Depth Bit Collar Set Drilling Limit Ring Positioner Locator with Hex Wrenche to Tighten The Stops

【Various Sizes】 12 drill stop rings, inner diameters are: 3/ 4/ 5/ 6/ 7/ 8/ 9/ 9.5/ 10/ 12/ 14/ 16mm, including 2 hex wrenches. 【High Quality】 The drill bit depth stop collar rings are made of stainless steel, durable, suitable for high carbon steel drill bit, can be fixed in any position along the drill bit. 【Limit Drilling】 This drill depth stop bit collar set is used for drilling limit to prevent drilling too deep, such as drill bit limiting ring, clamping device and positioner. 【Will Not Damage The Drill Bit】The screw-type collar will not damage the drill bit, this dowel shaft chuck can prevent mistakes and waste of materials, so it is worth the money. 【Precise Adjustment】The drill stop ring can be adjusted quickly and easily at any position on the drill flute/shaft. By preventing the drill bit from being too large and drilling, accurate drilling results can be obtained.