1、Space Saving: This cable track roller wheel trolley is space saving and will be convenient to use, also labor saving. 2、Galvanizing Processing: Our cable track roller wheel trolley is also adopted galvanizing process and with great rust resistance capabilities. 3、High Accuracy Bearing Balls: Cable track roller wheel trolley with high accuracy bearing balls ensures the stability of bearing rotation. 4、Curved Edge: Cable roller wheel trolley curved edge reduces the area of adhesion to the track and reduces drag. 5、Pulley Diameter and Spacing: Cable track roller wheel trolley has the pulley diameter of 24mm or 0.94in, pulley spacing of 50mm or 97in. 1 x Track Roller Wheel Trolley Item Type: Track Roller Wheel TrolleyMaterial: Stainless SteelPulley Diameter: Approx. 24mm / 0.94inPulley Spacing: Approx. 50mm / 1.97in