5512 Round glass knob Finish/Color: Cobalt blueMaterial: GlassDimensions: 1-1/8" diam.Timeline: Early 20th Century SKU: 5512-1996 Categories: Glass, Knobs Other Than Brass Tag: Cobalt Blue Description Description Traditional round glass knob has many uses around the house. Made of glass. Available in 4 colors. Comes with smooth pan head nickel plated bolt and nut. 1-1/8″ diam. , 1-1/8″ projection