Our Octagonal mortice/rim knobs are part of our Blacksmith range. Each one is supplied with a loose collar to allow them to be fitted flushed to the door or can alternatively be used in conjunction with a rim lock. Designed to match our Octagonal cupboard knobs to create consistency throughout your home. Suitable for use with a multitude of heavy duty locks, latches, and thumbturns for various purposes. The strength of the spring used in our heavy-duty lock/latches will ensure the knob returns to its original position. We recommend using a 3, 4, or 5 latch/lock. Supplied with matching SS wood screws. Knob Size: 54mm Projection: 66mm Rose Size: 57mm Spindle Size: 8mm (Threaded)