The olfa concealed blade safety knife features an adjustable blade positioning design which allows for 4 cutting points on a single-edge utility blade.
OLFA SK-15 Model 1136359 Disposable Concealed Blade Safety Knife
OLFA Concealed Blade Safety Knife SK-10/ 4-point Adjust Cutting shrink-wraps most plastic SKB-10 Cutter - AliExpress
OLFA SKB-16 Concealed Blade Replacement Head, Box of 10
Olfa Blades OLFA-SK-16 Quick-Change Concealed Blade Safety Knife - Atlas-Machinery
Disp Concealed Blade Safety Knife – Aabaco Store
Olfa SK-10 Box Cutter, Concealed Blade w/ Tape Splitter - Safecutting
Olfa SK-4/HOB-2/BP) £11.54 - Olfa SK-4 Self-Retracting Safety Knife (Bonus Pack)
SK10 Concealed Blade Safety Cutter, Olfa Safety Knives
OLFA Concealed Blade Safety Utility Knife (SK-10) - Multi-Purpose Safety Cutter w/ Concealed Blade, Tape Splitter, & Non Slip Ergonomic Handle, Replacement Blades: OLFA SKB-10 Safety Blades : Arts, Crafts
Olfa SK-16 Quick-Change Concealed Blade Safety Knife
Olfa SK-10 and SK-15 Concealed Blade Safety Knives - Contractor Supply Magazine
OLFA Japan imported safety knife, box opener, express knife, anti cutting hand, box opener SK-10