Bonzer Black Bench Can opener EZ 60 Model: Bonzer 'bench type' black can openers - If you open a few regular sized cans a day then the EZ-20 will suit your needs. Ideal for guest houses, small or boutique restaurants, pubs and tea rooms. This heavyweight can opener is designed for large scale catering and industrial kitchens. Ideal for canteens, schools, hospitals and large caterers.