Features1Scope Of Application: Suitable for most muscle massager. The outer diameter of the massage head is about 19mm / 0.73in, suitable for muscle massager with inner diameter of about 18.5mm / 0.73in. 2Soreness Relief: Match with muscle massager, using scientific vibration frequency and amplitude, it can activate muscles, increase blood flow, greatly reduce muscle recovery time, reduce soreness. 3Massage Head Set: 6 types of replaceable massage head, suitable for different parts and muscle groups, can be replaced as needed, simple and practical. 4EVA Material: Massage head is made of EVA material, which has shock absorption effect. Safe and odorless, can be in direct contact with the skin and can be washed directly with water. 5Portable Design: Light weight, small size, easy to install on the deep tissue massager, easy to store and carry, suitable for home use and massage shop.SpecificationItem Type: Muscle Massager HeadMaterial: EVAQuantity: 6pcs (5cm small ball head, black curved head, T shaped head, U shaped head, projectile head, spatula head)Caliber: Approx. 19mm / 0.7inApplicable parts of each massage head:Ball head: suitable for large muscles such as buttocks, thighs, calves, etc., to relax soft tissues and sensitive muscle groups.U shaped head: used for the spine, the head and the Achilles tendon.T shaped head: massage the large flat muscles of the lower back, relax the yourself, and shape every muscle.Projectile head: impact deep tissues, such as meridians, acupuncture points, etc. Deep relaxation, shape every muscle in your body.Curved head: suitable for neck and calfSpatula head: for abdominal muscles and lower backPackage List1 x Small Ball Head 1 x Black Curved Head 1 x T Shaped Head 1 x U Shaped Head 1 x Projectile Head 1 x Spatula Head