The S3 cutter has its own blades that have 2 notches in the top. Blades are reversable so each can be used twice.
They are sold by the manufacturer in packs of 100 which we know is too many for personal use so we break them down into packs of 5 at a lower cost. We put them in bubble wrap for safety but when you get them we suggest putting them into the special fold-out storage compartment on the knife so they are stored safely and conveniently.
Note - these blades will NOT fit the S5 cutter, code 774
To see all reviews, click the link in brackets below