1.Supply many step collets,long nose 2.Made of carbide&steel material 3.Used for boring,milling,drilling,etc 4.Fast delivery product details: Place of Origin: China (chengdu) Model Number: D20 colletsPrecision: High Precision Brand Name:DSP High quality made of carbide & steel material high precision:4u(0.004mm)--15u(0.015mm) all kind of collet campany details: DSP precision co ,ltd(JAPAN ...