M&G Utility Knife Paper Cutter 18mm – ASS91425 having Automatic blade lock. This utility knife cutter is made of high-quality plastic material. This M&G ASS91427 18mm Utility Knife Cutter has a strong plastic grip to hold comfortably. This best utility knife is suitable for cutting paper, raw plastic, packing tape, cord, etc. This retractable cutter can be a very good addition to your tool kit, whether, at home or camping, this knife always comes in handy.