... gear rack ,Nylon gear rack,Nylon Rack for sliding gate operator,plastic gear rack,cnc gear ... , M4 22X22 etc. All is steel material galvanized.For one meter length M4 8x30, M4 9X30, M4 10X30 ... packed into one steel pallet. There are bolt, nut and washer sets attached for each gear ... treatment:electroplate, galvanizedPacking: 4 pcs + screws into one caron box.Each carton has stainless steel bolts, nuts ...