Price is per piece ask for quote on more. Back plates are available for an additional cost. The total projection is 1"-1.5" depending on size selected. Clearance is .85"-1.125" from cabinet face. Length measurements vary by approximately .18" and are based on hole center to center measurements. Thickness of material used is as follows in either square or round steel: 3/8" solid steel up to 12" 1/2" solid steel for above 12" Mounting Instructions: Standard screw length is 1" and will fit most cabinets which are .75" thick. If you require longer or shorter screws please ask. insert provided threaded studs into each hole. Mark mounting location. Drill 3/16" holes at each mark. Remove threaded studs. Insert machine screws into holes from behind cabinet, and screw into pull. PLEASE READ: Items are hand made using reclaimed material and traditional blacksmithing techniques, therefore no two are exactly the same. Small variations in dimensions and shape may be present in each piece. Items may vary from photos slightly. These variations only add to the unique beauty of each piece, and are a testament to their authenticity as hand forged items. BRASS BRUSHED FINISH: This finish is achieved by heating the steel and brushing using a real brass bristle brush. Beautiful gold brushed look. BRUSHED STEEL FINISH: This is a brushed steel satin finish. After wire brushing, I add a no VOC clear coat which provides a barrier to help prevent corrosion.