Function: Full DummyBase Diameter: 2 1/2"Knob Diameter: 2 1/8"Knob Projection: 2 1/8"Finish Shown: Polished Brass
Product Features:Limited Lifetime Warranty.Solid Forged Brass: All Estate Knobs, Levers and Roses are manufactured of solid forged brass for maximum strength and durability.Concealed Mounting: Estate Knob and Lever sets offer a concealed mounting system. There are no fasteners visible to accumulate dirt and debris.Easy Installation: The single screw design facilitates quick and secure installation. Since the set screw does NOT carry any torque, there is no tendency for the knob or lever to loosen on the spindle. The spindle is designed to eliminate any problems in locating the trim for 1 3/8" (35mm) or 1 3/4" (49mm) thick doors. Knobs and Levers simply slide onto the spindle which is drilled to receive the set screw.Door Thickness: Estate lock sets fit 1 3/8" (35mm) and 1 3/4" (49mm) doors. 
