This OLFA HandSaver utility knife is a heavy-duty tool that includes a stainless steel blade channel with ratchet wheel blade lock. It is acetone resistant and features an anti-slip rubber grip. Use for DIY projects, construction, industrial applications, etc. Comes with 1 LBB blade. Uses replacement blades LB, LBB, LH, L-SOL and SWB. OLFA handles are guaranteed forever.