W9003 Heater Switch Knob $13.86 Quantity discounts available QuantityPrice Quantity -+ Add to Cart Details Diameter: 1 1/4" (31.75mm)Fitting Thread Size: No. 8-32 threadHeight: 5/8" (15.875mm)Shaft Diameter: 1/4" (6.35mm)Type: Details Back DetailsDiameter:1 1/4" (31.75mm)Fitting Thread Size:No. 8-32 threadHeight:5/8" (15.875mm)Shaft Diameter:1/4" (6.35mm)Type:Set Screw