The Yonex RQS-55 features a 112 square inch head, 9.25 ounce strung weight, and a stiff beam, making it ideal for a player with a slow to moderate swing speed looking for the largest sweetspot in the Yonex line. The RQS-55 continues the use of proven Yonex technologies such as Elastic Ti, Isometric Head Shape, and Dual 3D Stabilizer. Specifications: Head Size: 112 sq. in. / 722 sq. cm. Length: 27.5 inches / 70 cm Strung Weight: 9.3oz / 264g Balance: 8 pts Head Heavy Swingweight: 325 Stiffness: 69 Beam Width: 29 mm Head / 21.5 mm Shaft Composition: High Modulus Graphite & Elastic Ti + 3D Graphite Power Level: High Swing Speed: Slow-Moderate String Pattern: 16 Mains / 18 Crosses Product Reviews: I think the RQS55 has a lot to offer any player who is looking for control and power in their game. I wouldn't recommend it to net players or volley addicts, but definitely for someone who is looking for power and comfort. – Michael, Columbia, SC, USA