Feature:1. Accurate product specifications and bright appearance, high quality and long service life2. High accuracy, easy to load and unload, convenient and simple to replace the damaged one3. The tool holder can expand and contract, fully protect the tap and speed up work efficiency4. Using 40CR material, the quenching hardness is HRC48"52, sturdy and durable5. Widely used in CNC machining centers, drilling machines, lathes, CNC/milling machines, boring machines and machines, etc.Specification:Item Type: Tap Collet Chuck HolderModel: MT4-GT12-110LMaterial: 40CRDiameter of the Big End of the Cone: Approx. 31mm / 1.2inInterface: Approx. 19mm / 0.7inL1: Approx. 110mm / 4.3inL2: Approx. 120mm / 4.7inTapping Range: M3-M16Hardness: HRC48~52Applicable Chucks: M3, M4, M5. M6 M8, M10, M12, M14, M16Purpose: Used for clamping straight shank taps, used for processing;Product Advantages: Industrial products, anti-overload protection, the tap will automatically slip when reaching a certain torsion to the tap from breaking; it has the function of floating, telescopic and fast changeProduct Application: Widely used in CNC machining centers, drilling machines, lathes, CNC/milling machines, boring machines and machines, etc. Package List:1 x Tap Collet Chuck Holder