1 brand:OEM,lumei 2 material:aluminum,aluminum alloy 3 facory,manufacturer 4 on time shippment 5 CO ... part and the mandrel we use are Aluminum+Steel, Aluminum alloy+steel, Steel+Steel, Stainless Steel+Steel, Stainless Steel+Stainless ... principlesquality is life, service is insurancemajor productsshoe tacks nails,blind rivets,concrete nails,common nails,roofing nails, small machine screwyieldmore ...