Product Information : - This product has been specifically designed to work with the PWS In-Frame system. BARGRY9/29 is a 24mm mounting plate for use with in-frame hinges (C2A7P99) 94 deg hinge & the (C2AFP99) 165 deg hinge. This B2 series cruciform, slide-on mounting plate is supplied with pre-inserted euroscrews to suit 5mm diameter drilling. It is pressed steel, satin nickel plated. The picture shows a pair but you are only buying one back plate