OLFA replacement blades, 10 large and 10 small blades each, in sets of 3. - Brand: OLFA - Model: LB10K - Size: Large - Quantity: 10 blades - Model: SB10K - Size: Small - Quantity: 10 blades New, unopened, but stored at home for a long time. I think there should be no problem with use. Thank you for looking.