Our Mushroom knob sets are forged from solid brass and hand finished by our expert craftsmen. A perfect design choice for any home, with many matching products available. Suitable for use with a multitude of heavy duty locks, latches, and thumbturns for various purposes . We recommend using a 3", 4", or 5" latch/lock. Designed to match our Mushroom cabinet knobs to create consistency throughout your home. Knob Size: 49mm Dia Projection: 49mm Rose Size: 51mm Spindle Size: 8mm (Threaded)