These are quite simply brilliant little leathercraft knives. The sturdy metal handle houses a strong and super sharp retractable blade, which can easily be replaced once dull. Plastic handled craft knives with 'snap off' blades are not safe or suitable for leather work purposes. You need the extra strength of a metal housing, with a strong, steel blade secured properly within. You will find this knife comfortable to hold and very controllable to use - it fits neatly in your hand, and although sturdy, it is also very lightweight. Knife body measures 12.5cm (5") from end to end, with a depth of just over 1cm (1/2") This leathercraft knife comes in a bubble pack with 2 x blades. Replacement craft knife blades are reasonably priced and always available here.