Our FHC Back-To-Back Spherical Knob measures 1-1/4" (32 mm) in diameter, and extends 1-1/2" (38 mm) from the door surface. Knob is made of solid brass
Unique Back to Back Knob Design - Solid Brass Material with high Quality Plating
Designed for use with 1/4"-1/2" (6 mm to 12 mm) Tempered Glass | (1) 1/2" Diameter Hole in Glass