... Coil spring , Leaf spring, Mould spring,etc., and other unique feature products. 1Place of Origin:Xiamen, P.R China2Brand Name ... Pieces per Day discussable11Wire diameter range:0.15-8mm12Material:carbon steel,stainless steel, manganese steel wire, nickel wire, galvanized wire,alloys,etc13Casting experience: ... minimum inside diameter(5) Number of coils(6) Qty Stainless steel Cratalyst retaining spring