Products perennial supply of the American market, the inner diameter of the advanced stainless steel material, the external rubber environmentally friendly odorless, the product through the market long-term verification of fall resistance, wear resistance, temperature change, the product is divided into black, green, yellow, blue, red five colors, weight specifications can also be customized according to customer demand production.Conventional Models 5KG/10KG/15KG/20KG/25KG.10lb/15lb/25lb/35lb/45lb/55lb.