One-piece manufacturing process and design assures long life and superior performance. Heat-treated for strength. Use in pairs. T45A is a registered trademark of Ken-Tool. Ken-Tool's patented designs offer one-piece construction and assure long life for many tire-changing applications. Tip ends insert easily and will not cut or rip bead or sidewall. These designs make it easier to mount and demount tires without changing the way the tool is used.