Features Space Saving: This cable track roller trolley saves space, is convenient to use, and also saves labor. Galvanized Treatment: Our cable track roller trolley also adopts galvanized process, which has strong anti-rust ability. High-Precision Bearing Balls: The cable track roller trolley adopts high-precision bearing balls to ensure the stability of bearing rotation. Curved Edge: Cable roller wheel trolley curved edge reduces the area of adhesion to the track and reduces drag. Pulley Diameter and Spacing: Cable track roller wheel trolley has the pulley diameter of 24mm or 0.94in, pulley spacing of 50mm or 1.97in. Specification: Item Type: Track Roller Wheel Trolley Material: Stainless Steel Pulley Diameter: Approx. 24mm / 0.94in Pulley Spacing: Approx. 50mm / 1.97in Package List: 1 x Track Roller Wheel Trolley Package List 1 x Track Roller Wheel Trolley