Purple Round Head Massage Gun Heads, Deep Tissue Massager Attachments, Portable Muscle Massage Gun Accessories for Back Neck Muscle Relieve,Head for Handheld Electric Body Muscle MassagerBrand: Bonsure Color: Black,purple Features: The outer diameter of the electric silicone massage head has two sizes: 12mm and 18mm. Compatible massage gun interface inner diameter is 12 13MM and 18 19mm, which is suitable for most massage guns on the market. Massage gun parts can be selected in two pieces, purple and black, which are more fashionable and beautiful. It is easy to use and has a good effect on relieving muscle soreness and chronic pain.