Catalog > Electro-Mechanical Components > Panel Meters and Accessories > Accessories > Switch Knobs Plastic Screw Type Control Knob Plastic Screw Type Control Knob KNOB16-0019BL Plastic Screw Type Control Knob • Blue Inlay • Shaft Hole Size : 6.4mm 28.84 ZAR inc for 1 Each 127 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features Blue Inlay Additional Information Model WTN-1181BL Shaft Hole Size 6.4mm Base Diameter 19.5mm Top Diameter 16.7mm Height 12mm