Olfa SKB Safety Knife Blades - SKB-2/10B - 10 Blades/pk is a dual edge safety blade used for cutting cardboard, vinyls and more. Each blade features 2 cutting edges.
These replacement blades are
Olfa SK-4 Safety Knife
Olfa SK-9 Safety Knife
Olfa UTC-1 Retractable Auto-Lock Utility Knife
