McMaster 6174K67 Crossbar Induction Bearing Heater for 15 3 4" OD 4 3 4" Wide Bearing 55452RTB VOC Compliant Expansion Ratio None VOC Compliant Expansion Ratio None Standards FDA 21 CFR 177 Weight Capacity 420 lb Harness End Connection Carabiner Harness End Connection Material Aluminum Number of Legs 1 Series Nano Lok Anchorage End Connection Rebar Hook Anchoring Location Overhead Only SRL Housing Material Nylon Thermoplastic Visual Load Indicator Yes Sealed Yes Anchorage End Connection Type Rebar Hook Minimum User Weight 130 lb ANSI SRL Type SRL P Lifeline Material HPPE Rescue Method Self Rescue Mode Lower ANSI SRL Class (2021) Class 1 OSHA Standards Met OSHA 1910 13 16" × 13 16" use the largest crossbar that fits through your bearing