Primeline 36-256, 2-Notch Deep Hook Blades (5/pkg)

Primegrip knife blades can be used with most utility and roofing knives to cut roofing shingles, felt paper, foam board, insulation, shingles and other building materials. Manufactured from high-grade carbon steel and induction hardened for longevity, our blades last up to 75% longer.