... the specification of our Products ? MaterialCarbon steel,Stainless steel,Alloy steel,Copper,Aluminum are available.Carton steel is high quality iron,such as ... #,10B21,1035,CH38F,1039,40ACR...Alloy steel are 35,40CrMo,SCM435,10B38...Stainless steel is SS201,202,302,304,316... ... type,Eleven type,hexagonal type,Torx type,trangle type,slotted point type,square type,Combined type...FinishZinc plated,Nickel ...