1,Material: Zn(zinc) 2,surface treatment: plastic-coating 3,Sizes: 0.25-2.0 OZ wheel Balance Weights The weights for alloy rims (ounce unit)Material: Zn(zinc)Surface treatment: plasic-coatingWeight sizes: 0.25,0.5,0.75,1.0,1.25,1.5,1.75,2.0 OZPackaging units: 0.25-1.0 OZ, 50pieces/box 1.25-2.0 OZ, 25pieces/boxHook width: 0.25OZ 10mm; 0.5-0.75OZ 15mm; 1.0-2.0OZ 25mm