The Beam Trolley Anchor is easily positioned anywhere along an overhead horizontal I-beam. The durable nylon wheels glide smoothly over the beam surface while the steel D-ring provides an accessible tie-off point. The anchor is ideal for use in steel and specialty/food processing applications. Features: Lightweight aluminum body Stainless steel rail guides Coated steel D-ring attachment point Abrasion, heat & chemical resistant nylon wheels Materials: Aluminum; stainless steel; Ertalon® nylon wheels; Coated steel D-ring Weight: 7.1 lbs. (3.2 kg) Beam Flange Width Range: 3.5"-14" Beam Flange Thickness: Up to 1.75" Minimum Breaking Strength: 5,000 lbs. ANSI Weight Capacity: 130-310 lbs. (59-141 kg) OSHA Weight Capacity: Up to 420 lbs. (191 kg) OSHA Standards: 1926.502, 1910.140, 1910.66