Spinflo Gas Cooker Knob £5.00 40mm diameter. Spinflo Gas Cooker Knob SKU: 6514 £5.00 Please note all of the parts we offer for sale are used unless stated otherwise. All parts are tested to function correctly and be fit for purpose. They may however, have some minor cosmetic marks. Call us on 01422 384508 for more information on this product.