Knobs - Ceramic Numbers Knobs - Ceramic Numbers Knobs - Ceramic Numbers (5 ratings) Was €2.95 - Now €2.36! Ceramic Numbered Knobs: [Choose]No 6No 2No 3No 4No 5No 1 Quantity: at €2.36 each Add To Basket Stylish metal and ceramic numbered knobs. Only 2 and 4 now available. Please select the numbers you require. Each number knob measure 38mm in diameter and will stand 35mm proud of your furniture. The knobs fit doors/drawers with a maximum depth of 2cm.