Chipboard screw of low price and good quality. 1) Diameter: 3.0 - 6.0mm 2) Length: 13 - 120mm 3) Surface treatment: yellow zinc plated 4) Material: C1022, standard 5) Head: countersunk (single/pair), hexagon, plum blossom, square trough Packing: Bulk packing, small packing Or according to customers' specifications