... in this field 4>multi-fuction Coil Springs,different surface treatment,different size,as per customers' demand1>Wire dia:0.08 ... in this field4>multi-fuction;multi-purpose;5>DIfferent surface treatment as per ur demands6>can make as per ur requst ... to me directly,thank you !Packing: Coil Springs,differnet surface treatment,different size,as per customers' demand