This popular heavy-duty cutter features a contoured handle ratchet wheel blade lock and a stainless steel blade channel that holds blade tight. The blade made from high quality carbon tool steel is produced using OLFA precise multi-step production process for unparalleled sharpness and superior edge retention. Long lasting, durable snap-off blade - a new sharp edge with each snap. Uses OLFA's LB, LBB, LSOL, and SWB replacement blades. For right or left handed use. Guaranteed Forever.