John Deere Torsion Spring – A110307 Left Torsion Spring Specifications: End Type (ALPHA) 22/33, Inside Diameter (mm) 66.2000, Wire Size (ALPHA) 8.4070, Working Range (UNITY) 74.7000, Maximum Load (lbf/in or N/mm) (Nm) 0.0000, Height (mm) 240.0000, Number of Coils (ex. coil) (ALPHA) 4.8000, Material (ALPHA) A15-11, Finish (ALPHA) K-Painted. Fits the following John Deere models: Drill: 1590, 1890, 1895, 1990, N530, N530C, N530F, N536, N536C, N540, N540C, N540F, N542, N542C, N543F, N550, N560, N560F, 750A. This is a John Deere part.