Size: Min 30cm "/ Max 48cm", Material: Plastic and Rubber Packing: 1 pack | Multifunctional massager, double sided design, double size massage head, massage hammer, with Back Scratcher,ideal for comforting meridians and releasing stress . | The massager can knock shoulder, back, waist, legs and other body parts to relax muscle and relieve muscle pain. | The handle at the bottom back scratcher, removable design.It provides a little bit heavy strength during knocking massage,please knock mildly | Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item.