4" bore x 4" stroke cross tube hydraulic cylinder 3500 PSI. Heavy-duty hydraulics, 2-year warranty. Magister cylinders manufactured using steel piston and steel threaded gland with wear rings for long life. Welded cross tube ends, honed cold-drawn tubing, hard chrome plated rod and top quality five component piston seals allow Magister Hydraulics cylinders to work in extreme conditions. Excellent replacement for front end loader.