Please read to the end. We will not accept claims from those who purchase without reading. Please make your decision after understanding. This is a Dunlop SX300, a spin-oriented racket. The weight balance has been adjusted. Lead tape is applied at the 11 and 1 o'clock positions, in four places. The lead tape has been painted black to make it less noticeable. Please check the photos. Cushioning material has also been inserted inside the end cap to prevent the lead tape from shifting. Based on the theory of Mr. Murai, a racket master in Chiba (adding 1 gram of weight to the top increases the SW by about 3.5, and the balance also increases by 1 mm; adding 1 gram of weight inside the end cap lowers the balance by about 1 mm, and the SW does not change), I made the adjustments myself. (I have asked Mr. Murai to make adjustments many times in the past, and I have learned the mechanism and become able to do it myself). Please remove the lead tape yourself after you purchase the racket. However, the specifications will change if you remove it. A high SW makes it easier to generate power. It's top-light, so it's also easy to handle. Without strings, I think the SW is around 290. Current SX300 models often have an SW of 270-280, so I feel that while they generate spin, they lack the power to finish with a single shot. Currently, with the strings (Baiface 124) and overgrip, it weighs 328.4g, has a balance of 323mm, and an SW of 314.5. Despite being a top-light and thick racket, it swings easily. I have inserted a total of 10 Elastocross pieces in the same position as Federer. Please check the photos. The strings were replaced on October 24th and have only been used once. Since it's a single string of Baiface, it can still be used. Finally, please make your decision after looking at the photos, and please understand that no returns or exchanges are accepted after purchase. We will ship it in a cardboard box suitable for a tennis racket. Thank you very much. - Brand: Dunlop - Color: Green/Yellow - Grip Size: 2 - String: Baiface 124, 52 lbs - Model Name: SX300 Thank you for viewing.