Truma Combi Reducer Plug - Grey £5.00 Details; Truma BL22 reducer plug 60mm diameter Grey Truma part number - 40101-01 Truma Combi Reducer Plug - Grey SKU: 6628 £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.