The From the Anvil 4\" Straight Knob Door Bolt Pewter are tight fitting, well made and include a unique spring mechanism - they are for use on inward opening doors. The fixing plate measures at 90mm x 36mm and the receiver bridge is 34mm x 19mm. It is sold individually complete with fixing screws. Pewter Door Bolt The bolt has a pewter patina finish - this has anti-corrosion properties and can be used internally or externally. To remove dirt deposits, simply wipe over with a lightly oiled cloth from time-to-time and this will restore it to its original condition. Do not use any form of aeroso...