Heavy-duty die-cast metal construction provides the stability precision cutting demands. The PRO9's reinforced body eliminates the flex that undermines accuracy when scoring mat board or cutting through multiple layers of paper. Auto-locking mechanism secures the blade at any extension length; the slider won't creep during cuts, maintaining consistent depth through long scoring runs.

Reversible blade channel accommodates both right and left-handed use without awkward grip adjustments. The integrated pocket clip doubles as a blade snapper, extend the worn segment, snap it off cleanly, and you've got a fresh edge without fumbling for separate tools. This dual-function design keeps your workspace organized while ensuring you're never working with a dulled blade.

Thirteen cutting edges come standard with each knife; one AB blade strip provides multiple fresh segments before replacement becomes necessary. The snap-off design means you're carrying dozens of sharp edges in a single compact tool. Olfa's segmented blade system has proven itself across studios and workshops for decades, this PRO9 model brings that reliability to detailed craft work, paper cutting, and light materials processing where control matters as much as cutting power.