320 Pcs/set Material: aluminium&carbon steel Surface treatment: anodic oxidation+galvanized Include: 80 Pcs 2.4x5.5mm 60 Pcs 3.2x3.2mm 50 Pcs 3.2x6.0mm 60 Pcs 3.2x7.5mm 40 Pcs 4.0x8.0mm 30 Pcs 4.8x8.0mm Packed by plastic box