Specification Clamp I.D.: 1.75 " Clamp O.D.: 2.5 " Clamp Height: 1.75 " Clamp Thickness: 3/8 " Clamp SS allen bolts: 4 CNC Machined, Heavy duty steel Note New one year warranty for any manufacture defects You will receive exactly as picture show No Installation Instruction included, Professional installation is highly recommended