Mockett's metal knurled knobs are reminiscent of volume knobs on classic guitars and amplifiers and are ideal for vintage or contemporary industrial furniture. The company says the finished top and beveled edges give an attractive accent and a classic retro feel to the textured cylindrical grip surface. Offered in polished chrome, satin chrome, matte black, satin brass, and anodized aluminum, the knobs are available in 11/16 and 1 1/8 inches.