Features1Scope Of Application: Suitable for most muscle massager. The outer diameter of the massage head is about 19mm / 0.75in, 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: Multiple types of replaceable massage head, suitable for different parts and muscle groups, can be replaced according to needs, practical.4EVA Material: Massage head adopts EVA material, has great shock absorption effect. Safe and odorless, can be in direct contact with the skin, easy to clean.5Portable Design: Light weight and compact, easy to install on the deep tissue massager, convenient to store and carry, for home and massage shop.SpecificationItem Type: Muscle Massager HeadMaterial: EVAQuantity: 6pcs (large ball head, small ball head, black curved head, T shaped head, U shaped head, projectile 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 calfPackage List1 x Large Ball Head 1 x Small Ball Head 1 x Black Curved Head 1 x T Shaped Head 1 x U Shaped Head 1 x Projectile Head