Table Top Pulley (LSE) Great for experiments calling for a pulley at different heights, this pulley rotates a complete 360?! It adjusts over a height range of 10 cm and locks in place with an included thumbscrew. You can attach it to any surface to 5 cm thick. Two-piece apparatus consists of glass-filled nylon molded clamp and pulley with blue sheave attached to stainless steel rod. Coefficent of Friction a very low 0.04. Qty :