The MasterClass Smart Space can opener measures just 7 cm (3") wide, and comes with a 5 year guarantee. FROM MASTERCLASS SMART SPACE: a collection of clever kitchen gadgets that maximise storage space without compromising on function. EASY OPENER: simply twist the whole tin opener to remove lids in seconds - a built-in magnet grips the lid for safe, mess-free disposal. OPENS CANS CLEANLY: its tough, rust-resistant stainless steel blade glides though can lids, while reducing jagged edges. COMPACT AND CONVENIENT: this space-saving gadget works just as well as full-size tin openers, but takes up minimal space in storage.