High-quality hook blades which fit all STANLEY utility knives
Hook blades are optimal for knives for floor and roof layers. Thus the hook blade is the one used for utility knives designed for flooring and ceiling construction work. The standard size of a hook blade is 51mm long. An "extra wide" hook blade is 55mm long to be able to cut extra thick carpets. Some Stanley knives can use 51mm long hook blades and some cannot. To force users to use Stanley's 48mm long hook blades, some Stanley knives have been made slightly too shallow so that the 51mm long hook blades just won't fit. Note that it is only the hook blades that do not fit Stanley's carpet knife with hook. The long straight knife blades fit just fine as they have exactly the same dimensions if the Stanley knife blades.
Fortunately, Sollex has a great solution for the Stanley knife with hook blade in the 10STANLEY hook blade which has exactly Stanley's dimensions but the same high quality as Sollex 10P German produced PRO hook blades. You can easily order the 10STANLEY on the sollex.se website and get a really good hook blade that fits all Stanley knives when you need to change the blade matte knife.
An even better solution for changing blades in carpet knife is to use a knife that can be fitted with all types of hook blades: 48, 51 or 55mm. E.g. Sollex Dolphin knife or Sollex Construction knife. In these knives you can use almost all different types of blades for carpet knives.