RWS135A These are the correct replacement blades for multi purpose wall trimmers, the blade has one notch and a slot for correct fitting in the tool. Made in Sheffield England to very high standards these blades are very sharp and care should always be taken when handling and changing blades.
Please note there are 100 blades per box, these are a high carbon blade which keeps sharper longer.

Carpet fitters tell me this is a hard blade to find as it appears only to fit in the multi purpose trimmers, but we believe it fits most makes of this tool.