|These OLFA® hook blades helps prevent injuries to you and damage to the surface below where you're cutting. The dual edge on the blades is ideal for cutting construction materials including flooring, insulation, conduit and roofing materials and also industrial materials such as laminates, plastics, fiberglass and rubber. |
For Retractable Safety Knife (SK-4) and Retractable Auto-Lock Utility Knife (UTC-1). Each blade features 2 cutting edges. 5 blades per pack.