Yonex Muscle Power 55 locates the string on rounded archways that eliminate stress-load and fatigue through contact friction. This construction creates total unity of the string and frame through closer and tighter contact. The Muscle Power series, with its unique frame construction, integrates the frame and the string like no other. The series is designed for players who go after fast movement and effortless power.

• Frame Material: HM Graphite with resin and Titanium Mesh for Better Strength
• Shaft Material: HM Graphite Shaft with 10 mm longer to normal rackets, Medium Flex Stiff
• Max String Tension: up to 30 Lbs, Weight: 83 Gms, grip Size: G4
• Isometric Head Shape, Yonex Muscle Power Frame and Improved Grommets
• Made in Taiwan