Perko Door Button W/O Spring Part Manufacturer: Perko; Part Number: 1217DP0CHR; UPC: 085226030277 Per manufacturer, constructed out of chrome plated zinc with a polished finish, and a black marine grade plastic knob Overall Dimensions: 1 3/4" OD x 5/8" H; Mounts: (3) 1/8" diameter mounting holes Requires a # 8 oval-head pivot screw for installation (not included) Sold as seen in pictures; Note every computer shows colors differently; All measurements are approximate; Hardware and instruction/installation manual not included