Click or scroll to zoom Tap to zoom Clear Plastic Knob by Duppa SKU 1229 1 review Save Liquid error (product-badge line 32): -Infinity% £0.72 inc VAT £0.60 ex VAT 6 in stock. More available in 2 Weeks or more. Available for backorder (more info) 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart DESCRIPTION This plastic knob accepts a 6mm shaft. They simple press-fit onto a shaft. These are clear so that they can be used with the illuminated rotary encoders.