Catalog Number: 19MKBR Finish: BRASS Single-Sided KnobSolid Brass Material1/4" to 1/2" (6 to 12 mm)3/8" or 1/2" (10 or 12 mm) Hole Diameter Required The CRL Mini Bulb Style Knob is a brass constructed, single-sided model with a blind fastener end cap...