The Stanley STA198460 1992B Knife Blades are supplied as a twin pack, each containing 10 blades.
The Stanley 1992B blades are heavy-duty, general-purpose blades, which fit all standard Stanley knives. The trapezoid shaped blades are highly resistant and reversible.
  These blades are ideal for carpet, vinyl and any other material requiring a stiffer and stronger blade.
  Specifications:
  Blade length: 62mm. 
Blade thickness: 0.65mm. 
Blade height: 19mm.