The OLFA 18mm Ratchet-Lock Basic Utility Knife features an ergonomic, heavy-duty ABS plastic handle for comfortable use, A sleek stainless-steel blade channel with a ratcheting lock keeps your snap blade exactly where you want it - even when working in delicate or tight areas, This promo packs has the bonus of a 10-Pack of OLFA high-quality Japanese steel blades designed to snap off when you need a sharper edge, Each tough Silver Snap Blade offers eight cutting segments for volumes of cutting, When an edge gets dull, simple snap for a fresh edge, Blade changes are simple without the need for any additional tools. Contains 10 replacement blades.