This is STANLEY FATMAX Retractable Knife - Model 0-10-778
It's a heavy-duty utility cutter / box cutter.
What is it use for?
For cutting and trimming materials on site.
• Cartons / Boxes - opening your EDON and INGCO cartons in shop
• Carpet / Rug / Vinyl - flooring installers use it
• Plasterboard / POP - cutting gypsum board
• Rubber, leather, rope, insulation
• Electrical - stripping thick cables, cutting cable ties
• General workshop - marking and cutting
Why this STANLEY FATMAX is special:
• Retractable Blade - you push the black button with red lock to bring out blade, and retract it back for safety after use