2-PIECE, CUSHION TYPE; ZINC ELECTROPLATED FINISH; 2.2 INCH; -40 TO 300 DEG F TEMPERATURE RATING; 800 POUND LOAD RATING; CHANNEL MOUNT MOUNTING TYPE; 1-5/8 INCH TUBE, 1-1/2 INCH CTS PIPE SIZE; CARBON STEEL CLAMP MATERIAL; VIBRA-CLAMP[TM] BRAND