FallTech 7530 Steel, Trailing Beam Clamp Steel - Dual Ratcheting for Centering on I-beam, Machined Aluminum Bar, Steel Jaws w/Slider Pads, 4" to 14" Nylon slider pads on jaws provide worker with trailing mobility Alloy steel jaws for superior strength Precision machined aluminum bar creates positive lock Ratcheting design with thumb latches provide ease of adjustment