Stanley FatMax Snap Off Blades 18mm Pack of 5 STA011718 Stanley FatMax snap-off blades. The sharpest, longest lasting, stongest Stanley blade ever. The patented induction hardened edge gives a better, longer lasting performance and less down time. They are suitable for use with the folowing 18 mm snap-off knives: STA010481, STA010418, STA010018, STA010380, STA010280, STA010151.Pack of 5 STA011718