Leg press machines come in 2 classes; machines with plastic rollers, and machines with linear bearings. At Cyberfit we only stock machines with steel linear bearings. This allows the leg press to remain smooth and frictionless even with heavy weights placed on it. We also manufacture our machines with welded frames to minimise movement in the frame, especially under heavy loads. Cyberfit leg press machines are backed by a lifetime frame guarantee and 30 day right of return. We're confident you'll love our leg press hack squat machines as much as we do!