Specification Brand : YedaHcy BulletPoint1 : sturdy Material: Made of high-speed steel, ensuring long service life and high accuracy for CNC machining. BulletPoint2 : Torsion Protection: Features torsion-type tapping chuck to prevent tap breakage, enhancing durability and reliability. BulletPoint3 : Quick-Change Mechanism: Allows fast and easy installation and disassembly of tapping chucks, saving time and effort. BulletPoint4 : Safe Replacement: Enables safe and swift tapping chuck replacement, compatible with drill chuck extension for added versatility. BulletPoint5 : Strong Clamping Force: Provides good clamping strength for stable and precise operations, essential for high-precision machining. IncludedComponents : No ItemName : High Speed Steel Tapping Collet Chuck Holder, Overload Protection, Adjustable Torsion, Quick Change, GT12 JIS M8 for CNC Tools ItemPackageDimensions_Height : 5 centimeters ItemPackageDimensions_Length : 7 centimeters ItemPackageDimensions_Width : 5 centimeters ItemTypeKeyword : workholding-collets Manufacturer : YedaHcy ModelName : YedaHcyq20pdb3ehm ModelNumber : YedaHcyq20pdb3ehm NumberOfItems : 1 PartNumber : YedaHcyq20pdb3ehm PowerSourceType : ac/dc ProductDescription : Item Type: Tapping Collet Material: High speed steel Specification: M8 Shank Diameter x Square Hole: Approx. 15 x 12mm / 0.6 x 0.5in Product Category: CNC Tool System: Japanese standard How to Use: 1. Press the knurled position of the handle body with the thumb of your left hand and pull it in the direction of the 2. The handle body is aligned with the concave and convex keys of the chuck, install the chuck into the shank body 3. When disassembling the chuck, pinch the knurled key with your hand and pull the chuck back and it will be ejected automatically Install Steps: 1. Thumbs press down the spring 2. Put the tap into the chuck hole and release your thumb