D-bolts with nuts for BENZ heavy truck 1.Material:40 Cr ... bolts and nuts for trucks.Collection of pop rivet for railway,Collection of railway fastener,Collection of wind-driven fasteners, ... painting,Polishing. 6.Colors: black,grey,golden,silver. 7.Metric Standard Grade:8.8,10.9=1040N/mm,12 ... We have our own high-procision digital machine center for mould making in special mould workshop.Excellent mould ...