8 Forged Galvanized Scaffolding Dual Purpose Rigid aka Right Angle Clamps CBM1290 CBM 8 Forged Galvanized Scaffolding Dual Purpose Rigid aka Right Angle Clamps CBM1290 Drop forged swivel coupler Fit 1 1/2" to 2"OD Tube. Weight for this clamp is 4 Lbs. It Has 2 clamps with washer under bolt for easy non gauling pressure. IF YOU HAVE ANY QUESTIONS PLEASE CLICK ON (CBM1290) then RETURNS.