N2 9913 Ball Joint Fits all MTD Tractors 1997 & Newer - Replaces MTD 723-0448A, 723-0448AP, 923-0448A; Also for Select Cub Cadet, Troy Bilt, Yard Machine, Yard Man, Ryobi, Wizard, and More Also replaces 723-0448, 723-0448 and 112-0917 Dimensions: male thread size: 3/8-24 RH, female thread size: 7/16"-20 RH Warranty: This part shall be free from defects in material and workmanship under normal use and service for three-months from the date of purchase You can return this item (for any reason) if you ask for a return within 30 days of receiving your order and have not installed your product