Yonex Voltric Lite 25i Badminton Racket (Unstrung)The Yonex Voltric Lite 25i Badminton Racket comes with: NEW BUILT IN T JOINT Increased Shuttle Stability NEW Built in T Joint is manufactured from a special lightweight plastic combined with epoxy resin and foaming agent that enhances quality and performance by increasing the stability of the shuttle on the string bed and through the air. ISOMETRIC Enlarged Sweet Spot compared to a conventional round frame, a square shaped ISOMETRIC racquet generates