Strap Pipe Clamp Material Steel Clamp Material Finish Pre-Galvanized Clamp Type Standoff Two-Hole For Maximum Outside Diameter 1 in For Pipe Size 1 in Mounting Hole Diameter 0.25 in Number of Mounting Holes 2 Overall Height 2.94 in Overall Length 3.5 in Overall Width 1 in Standards ASTM A653