High-tensile Zinc plated silver D-bolts for BENZ 1.Material:40 Cr 2.Grade: ... bolts,stainless steel U-bolts,center bolts for kinds of big brand heavy duty truck. 2.Application:Collection of wheel bolts ... plated,Dacromet, Bake painting,Polishing. 6.Colors: Black,grey,golden,silver. 7.Metric Standard Grade: 8.8,10.9=1040N/mm ...