This Heavy-Duty Ratchet-Lock Utility Knife features a contractor tough, contoured, high-impact ABS plastic handle that withstands the toughest jobsite environments. The ratchet-wheel locking mechanism allows for unlimited blade adjusent positions. With a stainless steel channel that supports the full length of the blade, this knife can tackle all heavy-duty cutting jobs from drywall, roofing, and flooring; to rubber, gasket materials, and more.