The Current Tools 9548 Four-Sided Roller with Clamp features a multi-directional four-side roller assembly that easily clamps onto most styles of cable tray. Its 8″ opening and low-friction rollers support cable pulls while minimizing snagging, and the quick-release pin allows fast loading/unloading. Rated to safely handle up to 100 lb (≈ 0.45 kN) pulling capacity.