4" bore x 8" stroke pin eye hydraulic cylinder 3500 PSI. Heavy-duty hydraulics, 2-year hassle-free warranty. Magister cylinders manufactured using steel piston and steel threaded gland with wear rings for long life. Welded across steel tube, honed cold-drawn tubing, hard chrome plated rod with pin through hole, and top quality five component piston seals allow Magister Hydraulics cylinders to work in extreme conditions. Excellent replacement for construction, material handling and farming equipment.