Features： 1、UNIVERSAL SIZE: Suitable for most massage guns. The massage head has an outer diameter of about 18 mm and is suitable for massage guns with an inner diameter of about 17.5 mm. 2、HEALTH CARE: Use with massager can activate muscles, increase blood flow, greatly reduce muscle recovery time, reduce pain and easy to replace 3、APPLICABLE PARTS: Can massage the flat major muscle group of the back, relax the body, and shape every muscle in the body. 4、COMPACT DESGIN: Light weight, small size, portable, easy to install on the fascial massage gun Can be carried around and replaced. 5、 MATERIAL: Massage head is made of stainless steel, safe and tasteless, can be in direct contact with the skin, safe to use, can be cleaned directly with water. Specification： Item Type: Massager Replacement Head Material: Stainless steel Scope of Application: Fascia massager Applicable Outer Diameter: Approx. 18mm / 0.7in Applicable Parts: Massage the flat major muscle group of the back, relax and shape every muscle in the body. Package List： 1 x Massager Replacement Head