11Pcs M3~M16 Tapping Collet Set, BT40 GT12 Alloy Steel Tool Holder Workholding with 7P Collets CNC Chuck Kit for Engraving Machine Milling Lathe Tool

HIGH STRENGTH AND DURABILITY: Tapping collet set adopt good quality material, strong and durability, possess high strength and long life, tapping range from M3-M16 TRANSMIT POWER AND PROTECT: The end face of the collet casing is provided with a claw that engages with the main shaft of the machine tool, and the shank of the collet casing is provided with steel balls, springs and tighten screws that can not only transmit power to the tapping collet but also protect against overload EFFICIENT FAST CHANGE: Come with fast change, non overload protection function, reduce labor strength, very efficient AUTOMATIC SLIP TO PROTECT: When the tap reaches a certain torsion, will automatically slip, prevent the tap from breaking, protecting the workpiece and the tap, thus reducing the production cost WEAR: Alloy steel material has high toughness, wear resistances, low and high temperature resistances