Product Name: compression spring; 100 percent New and excessive quality. This product is your excellent choice. Do not hesitate. It is time to replace your old, worn, broken product.Diameter Rod: 8mm / 0.8cmOrifice Diameter: 16mm / 1.6cmFree Length: 50mm / 5cmMaterial: alloy steelLoad Type: Medium LoadColor: RedWeight: 32gPackage Content: 1 x compression springOnly the above equipment content, different merchandise aren't included.Note: Light taking pictures and varied exhibits could cause the colour of the article in the photo somewhat diversified from the genuine thing. The dimension allowed error is +/- 1-3cm.