(Note: Measurements are outside max. dimensions unless stated otherwise).18th Century : Large pilaster Corinthian capital.Option : One 1 inch No.10 slotted round head steel screw.Height 45mm. (1 3/4")Base external diam. 35mm. (1 3/8")Base internal diam. 30mm. (1 1/8")Top front 45mm. (1 3/4") centre of 2 returnsTop sides 38mm. (1 1/2") back corner to centre of return.Top back 48mm. (1 7/8") back corner to back corner.Flat back.5.5mm. diam. hole in base to screw onto column or for threaded bolt to pass through.