These are the drive units pulled from the rear of a zero-turn mower and are in new, unused condition. Both units are included – left and right – complete with cooling fans and pulleys attached as shown. Type: Hydrostatic Twin Transaxle (ZTR). Includes: Both left and right transaxle units with cooling fans and drive pulleys. Part number and model number are clearly labeled and can be cross-referenced at tufftorq. Com. What’s Included: Both transaxle units are included as shown in photos. No additional hardware, brackets, or mower components are included.