Set of 2 Carbonex 20 MUSCLE rackets made of high elastic carbon - Model: Carbonex 20 MUSCLE - Material: High elastic carbon - Quantity: Set of 2 Thank you for viewing. Purchased about 20 years ago and stored after using for several years. There are no cracks. The original grips have been removed. Please install your preferred strings and grips. As a bonus, I will include a Cabonex 12s shown in the image, and a Yonex soft case (not shown in the image). The grip sizes are 3U5G for the 20 and 2U-G4 for the 12. The 20 MUSCLE was about 15,000 yen at the time.