Detaied information: 1. Material: a356 aluminium alloy . 2. Technology: gravity casting, t6 (heat treatment & ageing treatment). 3. Surface finish: raw, tumbling, dull polishing, powder coating and pad printing. 4. Size available: we have gravity casting trucks with sizes of 4.75", 5.0", 5.5", 6.0", 7.0", 7.7", available currently. 5. Pu bushings: high-rebound pu bushing hardness: hr85a/90a/95a/99a. Color can be customized. 6. For kingpins: kingpin color: sliver/ black/ golded color, size can coustomized, usually round head solid kingpin are used. Also can choose hollow kingpins. 7. Truck samples: we are happy to send you samples for testing purpose, but we need charge samples cost and shipping cost. 8. Printed logo: we are happy to make your own designed graphics for truck printing. 9. Engraved logo on the hanger & base plate: can be customized, but need to open a new mould. 10.Packing: each piece packed in a shrink wrap, and 40pcs packed in a carton. Also can choose two pieces to packed in a box.