HEAD EXTREME 145SPECIFICATIONS: Frame weight: 145 g 5. 1 oz Head size: 495 cm 77 in Grip size: 3 7 8 Balance: head light Beam: 19. 5 20. 5 21. 5 With its 145g frame, the EXTREME 145 delivers astounding stability and control, as well as power, making it the ideal racquet for beginners. While the frame construction ensures excellent power transfer, the Innegra technology, a hybrid composite structure which is integrated into the racquet, supplies advanced shock