A door knob set made from solid brass. This door knob features our signature, diamond-cut, cross-knurl pattern and is refined by hand. Sold as a pair. This product is best used with a long backset (82 mm), lightly sprung, two-way rotating tubular latch or mortise lock. DISCLAIMER: Always consult a trade professional when installing these door knobs. Buster + Punch is not responsible for the usage or feasibility of installation requirements. This product is not suitable for damp or wet environments. A pair of unsprung solid metal door knobs, with an architectural 4 mm thick rose. The rose is designed for use with UK (centre distance 38 mm), SWE (centre distance 30 mm), or US/ANZ (centre distance 41.5 mm or 1-5/8”) specific latches. Compatible with either tubular latches or mortise locks. Suitable for interior doors only. Fits doors of thickness: 35 mm to 54 mm (with supplied fixings*). *For thicker doors, longer through bolts and a longer spindle will need to be sourced They work great on all internal doors and can be teamed up with our matching door accessories. Diameter: 57mm Projection: 57mm Finish: Black Collection: Sprung Included: 1 x pair of Door Knobs 2 x M4 x 35 mm Through Bolts 1 x 8 mm x 8 mm Square Spindle