Black Knight Sweet Spot Trainer Stored after being purchased new. Masking tape is attached to prevent the strings from breaking, so please remove it if you are concerned. Also sold on Rakuten, Yahoo! Shopping, etc. Specifications: ・Reference weight standard: 4U5±5 ・Length: 64.5cm ・Tension: ・JAN: 0770895190109 ・Price: 9,000 yen (excluding tax) ※Includes a hard cover This is a training racket used for regular practice and practicing difficult shots. By using it, you can increase the probability of hitting the sweet spot when you switch back to your regular racket, allowing you to return the ball as intended. ＜Feature 1＞ It's not just the face area that's small. Compared to a regular racket, the face is positioned in the sweet spot area of a regular racket. ＜Feature 2＞ The average frame weight is about the same as a regular racket, so unlike heavy training rackets, it can be used by a wide range of people, including women and children. ※It is also possible to restring it with a stringing machine. Tension 13-17 Yonex Gosen