OLFA Replacement Blades Thickness: 0.5mm / 18mm Large LBB50K Used, approximately 44 unused blades for sale This product contains 50 blades, but the quantity is estimated by weight. Approximately 44 blades are estimated to be present. For reference: 25 blades → 176g Remaining blades → 143g *Used blades: 319g, approximately 44 blades for sale. Blades are not counted individually. Please refer to the images for details on the remaining quantity. Please refrain from purchasing if you are concerned. Instant purchase OK - Brand: OLFA - Model Name: LBB 50K - Number of blades: 50 - Blade size: 18mm - Thickness: 0.5mm