Core Inner Diameter: 3"Bore: 1.504" / 1.502" (1-1/2")Securing Method: Split Clamp - Front Flange: NoRear Guide Flange Holes: NoAir Connection Type: Valve - A - 1597Air Connection Location: Front (Chamfered End) , Parallel to Bore Leaf Length (B), Overall Length (A): 13.5" , 16"