Bolts: 1 Material:Brass,stainless steel,steel,aluminum; 2 Different sizes and shapes as you like; 3 ISO 9001:2000. Bolts:1 Material:Brass,aluminum,stainless steel,steel;2 Different sizes and shapes as you like;3 Reliable quality.We can supply wide variety of nuts according to your demands.Materials can be steel,stainless steel,brass and aluminum.Finishing:as requested. Bolts