Hammer massage tools: the handle is made of and will not rust, bend, break or be damaged. Wooden back scratcher: long handle, can touch anywhere on your back, won't scratch your skin and safe to use. Wood hammer knock massager back: the finger- like scratch stick has smooth edges and is not easy to hurt your hands and skin during use. it is effortless to use. Back scratcher bamboo: the back scratcher with massage hammer can be used not only for scratching but also for relieving your muscle pressure with the hammer head.