... :18*1.6-16*20.5 2.material:H62 bushing:Features for this item:1.size:18*1.6-16* ... : GB BSW, JIS, ANSI,DIN, Non-standard2.Material: carbon steel alloy steel,aluminum3.Finish: white/yellow/blue/black zinc,nickle,black ... .Pls feel free to contact us for more information! M18 copper straight bushing keyless bushing