Riser Clamp Bolt Diameter 25/64 in Bolt Length 25/64 in Clamp Material Steel Clamp Material Finish Electrogalvanized For Maximum Outside Diameter 2 7/8 in For Pipe Size 2 1/2 in Load Capacity 390 lb Mounting Hole Diameter 0.39 in Overall Height 1 in Overall Length 11 in Overall Width 1 in For Use On Pipe Standards MSS SP-58 Type 8 WW-H-171 Type 8 Bolt Center-to-Center Length 7 1/2 in