Features SPACE SAVING This cable tray trolley is space-saving and will be convenient to use, as well as labor-saving. Galvanizing Processing: Our cable tray caster trolley is also adopted galvanizing process and with large rust resistance capabilities. HIGH PRECISION BEARING BALLS The cable guide roller carriage with high precision bearing balls ensures the stability of bearing rotation. Curved Edge The curved edge of the cable trolley reduces the grip area to the track and reduces drag. Pulley Diameter & Spacing The roller roller trolley has a pulley diameter of 24mm or 0.94 inches, pulley spacing of 50 mm or 1.97 inches. Specification: Item type: trolley with wheels Material: stainless steel Pulley diameter: approx. 24mm/0.94in Pulley spacing: approx. 50 mm/1.97 inches. Package list: 1 x trolley with wheels Package List 1 x Track Roller Wheel Trolley