Specification Brand : Holigie BulletPoint1 : [PREMIUM MATERIAL] Drill stop made of premium zinc alloy for sturty and endurance. BulletPoint2 : [ADJUSTABLE DESIGN] Drill bit stop collar set open type rings allow for fine-tuning to meet various clamping requirements. BulletPoint3 : [SECURE LOCKING] Drill bit depth stop collars screw locking feature provides strong clamping torsion to defend plate puncture. BulletPoint4 : [VERSATILE USE] Drill bit depth stop suitable for carbon steel drill bits to limit drilling depth effectively. BulletPoint5 : [CONVENIENT SET] Drill block for straight holes includes 3 metal stop rings in 6mm, 8mm, and 10mm sizes, and a hex wrench for easy usage. Color : Style B IncludedComponents : Bag ItemName : Holigie Drill Stop Drill Bit Stop Collar Set Clamping Torsion 4.5kg 3PCS Drill Bit Depth Stop Collars with Hex Wrench Open Type ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 6 centimeters ItemPackageDimensions_Width : 5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : pin-vises Manufacturer : Holigie ModelName : Holigiegqvh7s5m36 ModelNumber : Holigiegqvh7s5m36 NumberOfItems : 1 PartNumber : Holigiegqvh7s5m36 PowerSourceType : ac/dc ProductDescription : Holigie drill bit stop collar set crafted with utmost exactitued to elevate your drilling experience. These stop rings feature a robust screw-locking mechanism that secures the drill stop ring with a clamping torsion of up to 4.5kg, effectively defending plate punctures. Boasting an open design, they offer unparalleled versatility, allowing for fine-tuning to meet diverse clamping needs. Crafted from superior zinc alloy, they exhibit exceptional endurance, ensuring a long-lasting service life. Suitable for carbon steel bits, these stop rings effortlessly clamp in place to limit drilling depth, offering both convenience and practicality. Our comprehensive set includes 3 metal stop rings in 3 sizes (6mm, 8mm, 10mm), complemented by a hex wrench for seamless usage. Item Type: Drill Bit Stop Ring Material: Zinc Alloy Color: Silver Use: Applicable to carbon steel drill bits, which can be safely locked at any position along the drill bit