Onslow Unsprung Door Knob - Antique BrassOur flat fronted Onslow door knob is a contemporary alternative to our beehive design. The knob is unsprung, which means you can use it with an existing sprung latch. To make sure it stays easy to turn, we'd recommend using a lightly sprung latch. Theres also no danger of it coming away in your hand weve engineered the rose and knob to be inseparable. Antique brass is whats called a living finish because it reacts to the air and moisture around it,