Head Graphene XT Instinct Rev Pro Tennis Racquet - Unstrung HEADs Graphene XT Instinct Rev Pro is still a great racquet choice for juniors moving up to their first adult-sized frame. Weighing a half ounce lighter than the Instinct S, the 9... Graphene Xt | Lightest Instinct Family Racquet | New Cosmetic Look Size - (See Description) | Color - (See Description) Authorized Head Dealer. All racquets are strung and ready for the courts! SEE SELLER DETAILS FOR RETURN POLICY.