The Somerset Collection creates a seamless transition from Classic to Contemporary. Indulge in traditional solid brass styling finished in all your modern favorites. This collection is also backed by Top Knobs lifetime warranty, so you can rest assured your hardware will stand the test of time. In your choice of antique copper, antique pewter, black iron, black nickel, brushed satin nickel, flat black, german bronze, polished brass, polished chrome, rust, verdigris, brushed bronze or tuscan bronze. 3" or 3 1/2" boring.