G28415 `° Radio Shack 274-0415 Set Screw Aluminum Insert Control Knob for 1/4" Shafts

Radio Shack control knob features aluminum insert and edges as shown. This knob is not only attractive but very sturdy as it has a metal insert that allows you to install this on any 1/4" shaft and it firmly grips - great for rotary switches, volume controls, etc. Overall diameter 0.77" and height is 0.45". Has black body with white pointer line.