Head YouTek Graphene Radical S Tennis Racquet. Grip Size -4 (4 1/2) Racquet is unstrung and does not have a cover Headsize: 102 square inches / 660 sq. cm Weight (unstrung): 9.9 oz / 280 grams Balance (strung): 3 points head light / 33.3 cm Flex: 63, Swingweight: 307