Hoister 4 Point Lift System 25 - 90lb/10'Designed for one-person operation. Raise and lower with a single control rope. Patented design lifts and lowers loads evenly, regardless of weight distribution. Self-locking safety cleat grips instantly if the rope is accidentally released. Stainless steel hardware, double-braid rope for strength, durability, long life. Everything is included for easy installation. Specifications:Ceiling height: 3.05m / 10ftMinimum working load: 11kg / 25lbMaximum working load: 42kg / 90lbMechanical Advantage: 4:1