Features Galvanizing Processing: Our cable track roller wheel trolley is also adopted galvanizing process and with great rust resistance capabilities. High Accuracy Bearing Balls: Cable track roller wheel trolley with high accuracy bearing balls ensures the stability of bearing rotation. 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. Space Saving: This cable track roller wheel trolley is space saving and will be convenient to use, also labor saving. Curved Edge: Cable roller wheel trolley curved edge reduces the area of adhesion to the track and reduces drag. 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