McMaster 30075T116 Push to Lock Nylon Plastic Clamping Hanger, Pack of 5, 13 16" to 7 8" ID G4694864 IEC 60529 IP68 and ISO IEC 60529 IP68 and ISO 20653 IP69K Braking System Frictional and Pawls SRL Housing Material Cast Aluminum Anchorage Hook Gate Opening 1" Harness Hook Gate Opening 3 4" Locking Anchorage Connection Hook Type Carabiner Anchorage Hook Type Steel Carabiner Fall Braking System Frictional and Pawls Locking Harness Connection Hook Type Steel Swivel Snap Hook Line Material Stainless Steel Housing Material Aluminum Harness Hook Type Steel Swivel Snap Hook Visual Load Indicator Yes Number of Legs 1 ANSI SRL Type SRL Harness End Connection Material Steel Brand and Series Honeywell Miller Duraseal Replaceable Lifeline Yes Anchoring Location Overhead Only Anchorage End Connection Material Steel Harness End Connection Carabiner Sealed Yes Anchorage End Connection Type Snap Hook Lifeline Material Stainless Steel RFID Equipped Yes Anchorage End Connection Steel Snap Hook ANSI SRL Class Class B OSHA Standards Met OSHA 1910 DESCRIPTION Wall Material Nylon For Inside Diameter (Inch) 13 16" to 7 8" For Inside Diameter (Metric) 22 mm to 23 mm For Pipe Size 1 2 For Copper Tube Size 3 4 For EMT Conduit 3 4 For IMC Conduit 1 2 For Rigid Conduit 1 2 Weight Capacity 200 lb so these are best for dry environments