Stanley 1991B Knife Blades – STA111911

Stanley knife blades are one of those things you never think about until you run out mid-job. The Stanley 1991B heavy duty knife blades are the standard replacement blade for Stanley retractable utility knives, and they fit the classic Stanley knife that has been on building sites, in workshops, and in toolboxes for decades. If you use a Stanley knife regularly, these are the blades you need.

The 1991B blade is a heavy duty design, which means it holds a usable edge for longer than a standard blade under everyday cutting tasks. Whether you are scoring plasterboard, trimming carpet, cutting through packaging tape, stripping insulation, or slicing roofing felt, a sharp blade makes the job faster and safer. A dull blade requires more force, which is where most accidents happen. Keeping a fresh supply of Stanley knife blades to hand is a simple habit that makes a real difference on site.

Stanley 1991B Blade Storage and Pack Options

The blades come supplied in a storage case, which keeps them together and protects the edges between uses. Loose blades rattling around a toolbox are a hazard to fingers and to the blade edges themselves, so the case is a practical addition rather than just a bit of packaging. The case also makes it easy to dispose of used blades safely, which is important on site where waste and sharps management matters.

You can buy the Stanley 1991B knife blades in a box of 10 or a box of 100. The box of 10 suits occasional users or those who want a small stock kept in a tool bag. The box of 100 is the sensible option for busy sites, workshops, or anyone buying for a team. At the price point, buying in bulk is straightforward to justify.

Changing Blades Regularly

The most common mistake people make with Stanley knife blades is leaving a blade in too long. A blade that feels usable often still causes torn edges on materials rather than clean cuts, and it forces you to use more pressure than you should. On site, swapping blades frequently is cheaper than dealing with ragged cuts or a trip to the first aid kit. The storage case makes rotation easy: used blades go back in one end, fresh blades come out the other.

Stanley knife blades are a consumable, and the 1991B is one of the most widely used blade types in the range. They are compatible with all Stanley retractable utility knives that take the standard trapezoid blade format, which covers the vast majority of Stanley knife models in circulation. If you are not sure whether these will fit your knife, the answer is almost certainly yes.

Available in boxes of 10 or 100, the Stanley 1991B heavy duty knife blades are a practical stock item for any trade or workshop setting.