DIY FITNESS ATTACHMENT: Suitable for 3-10mm wire rope, climbing rope or twine, can work for LAT pulley system, lifting blocks, lifting, ladder lift, gym equipment, DIY projects, clothesline, elevator.Material: The pulley block is made of durable hard steel, super wear-resistant and anti-rust, strong and durable.Quiet pulley: Heavy duty nylon pulleys with double bearings, no noise and smooth, maximum load: 300 kg. Effortless design: the fixed pulley prevents the rope from twisting. Smooth roller ensures good rope movement, effortless, economical.Wide Application: Widely used in steel wire rope pulling efforts or other rope tools; can be installed on walls, floors, ceilings, beams; designed for use with rope or lanyard in indoor and outdoor applications to hang heavy objects or lighten loads.