BS 9mm Box Cutter Snap Off Replacement Blades 30 Pack Standard Duty Blade Carbon Tool Steel Blades (0.4(T)*9(W)*80(L) mm 12 Segment)

They are very sharp.....

Pleased with these, I do use them quite a lot and it's super handy to have a pack of them on hand. Quite tough too.

Small and compact great for on site working great value for the money will recommend this item

Pretty sharp.Durability is not great but you plenty out of the box.Buyer beware, please double check the size matches your cutter

It was a replacement pack and works great

These were advertised as being 9mm & the packaging states 9mm, but they are actually only 4.5mm so didn't fit the intended blade holder, which means they're useless to me and I can't comment on quality etc. As these are blades, returning would be too much of a hassle!

Basically they do what I require

Great value