1.material:carbon steel/Cr-V/S2 2.finishing:stain,nickle plated,titanium coated 3.content:6pcs power bits,60pcs bits set 1.material:carbon steel/Cr-V/S2 2.finishing:stain,nickle plated,titanium coated 3.content:6pcs power bits,60pcs bits set 66 pieces combined tool set