High Quality Satin Nickel Finish Knob Diameter: 1-1/4" --- Backplate Diameter: 1-1/4" --- Base of Knob Diameter: 5/8" Projection with Backplate: 1-3/8" --- Projection without Backplate: 1-1/4" Can be used with or without backplate Individually Polybagged with 1" Mounting Screws Included Cosmas Hardware is the way to go when designing or fixing up your kitchen or bathroom. They do not make us charge unnecessary markups for their hardware like some of the other major brands do. Therefore, giving you great hardware at a price that you can afford. Go ahead, compare, we dare you.