The OX Pro Retractable Utility Knife is a professional-grade box cutter built for serious construction tasks. Featuring a heavy-duty metal body and a slightly angled ergonomic handle, it offers superior handle grip and superior comfort, ideal for repetitive tasks. Equipped with 5 SK5 blackened double-sided blades, and internal blade storage holds up to 5 replacements, so you're always prepared without needing to return to your toolbox. The quick-release blade change button makes swapping blades fast, tool-free, and safe, perfect for fast-paced job sites where efficiency matters. This pro retractable utility knife is compatible all standard-size utility blades for universal compatibility and job site convenience. The built-in tether/lanyard hole offers easy access and storage on the tool belt or wall hooks. Whether you're opening boxes, cutting insulation, or trimming materials, the OX Pro Retractable Utility Knife offers rugged reliability, comfort, control and pro-level performance.