LF 20250Lift Rite LF 20250 pump piston kit for manual pallet jack repair features a chrome plated carbon steel piston, nitrile rubber hydraulic seals, and is compatible with LF50 Low Profile 4way, LR2055, and L50 models. Hydraulic port accepts 3 4 16 UNF thread. Nominal piston size is 1. 25 inches diameter with 2. 50 inches stroke. Seal kit PL 20278 is required for overhaul. Compatibility: Fits pallet jacks made by Lift Rite, model L 55. Alternate model: L55;