The Stanley 9mm snap off blade is suitable as a replacement blade for a range of Stanley knives which includes the Stanley 0-10-150 safety retractable light duty knife RS part 536-004. These safety snap off knife blades can snap off with ease when a segment becomes blunt via the blade dispenser included. As well as a tool for snapping blade segments off, the dispenser can also be used to safely store old blade segments.

Snap-off blades used on safety knives allows the user to safely remove a section of the blade after it has become blunt, instantly replacing it with a sharp edge, saving time and effort.
9mm blade has 13 segments