1. Driving cylindrical gear for MCY axles 2. Material:20CrMnTi 3. Figure number ... Products Co., Ltd., Shandong Luyan Color Masterbatch Co., Ltd. Realleader Fitness International Co., Ltd., Taian Otaway Fitness Equipment Co., Ltd., Shandong Songyuan Net Products Co., Ltd., Shandong Baolailily Bioengineering Co., Ltd., etc ... to create a splendid future together.: 20CrMnTi Driving Cylindrical Gear