load bearing capacity Two sizes are available: a small wheel rated at 35 kg and a medium wheel rated at 70 kg. This pulley covers a range of sliding requirements. Smooth sliding experience A speed mechanical bearing enables effortless, smooth sliding to improve functionality in any space. Seamless nylon wheel design The integrated nylon wheel operates with no noise, making it suitable for quiet environments such as libraries or study rooms. Sturdy construction Built from zinc alloy and reinforced with a robust 2 mm loadbearing shaft, this pulley is durable and reliable over time. Use scenarios In libraries or study rooms to move silent book carts, room dividers, or equipment carts that require quiet operation. In offices or classrooms for sliding panels, cabinet doors, or movable partitions that benefit from smooth, quiet motion. In DIY projects or home workshops for sliding tool trays or trackbased storage, with load capacity determined by wheel size (35 kg or 70 kg).