(Note: Measurements are outside max. dimensions unless stated otherwise).19th Century : Hand-built sprung mechanism for lever handle or knob allows spindle to rotate and return to original position.Option : Two 3/4" No.4 slotted countesunk colour-matched brass screws.Please select LEFT or RIGHT HANDCylinder diam. 31mm. (1 3/16")Cylinder depth 10.5mm. (3/8")Spindle hole 8mm. (5/16") x 8mm. (5/16")Brushed solid brass.