... ,6.8,8.8,9.8.... Copper Bolts,Copper Bolt,Brass Bolts.1.What’s the specification of our Products ... steel,Copper,Aluminum are available.Carton steel is high quality iron,such as 1022,1018,1010,1008,1015... ... ,Pan head,Countersunk head,Bugle head,Oval head,Hex flange head,Round head,Ball head,Button head... ... ,wood and so on.4. We have strict quality control from producing to delivery.Our company had strong ...