NT30 ER40 40Cr Chuck Tool Holder M12 Drawbar Thread CNC Milling Collet Holder with Wrench

1、FINE PROCESSING: Vacuum quenching treatment can realize carbon oxycarburizing to improve the hardness and fine grinding can increase the anti corrosion ability. 2、INTEGRATED DESIGN: The inner and outer cone are finely ground the chuck and the body inner cone are formed at one time with uniform strength and high concentricity. 3、SOLID STRUCTURE: The back pull clamping design of the handle and the design of tightening the tie rod screw can prevent the handle from falling off. 4、40CR ALLOY STEEL: Made of excellent 40Cr alloy steel material has high hardness and wear resistance not easy to deform or corrode for a long time. 5、WIDE APPLICATION: Widely used in CNC machining centers engraving machines and other high speed processing machines which is efficient and durable.