Overview Reviews Product Description When you need to protect the surface below your cut, choose the OLFA 18mm LH-20B snap hook blade. Each blade offers four (4) curved blade segments that pull the material towards the cutting edge and safeguard the area under the cut. Once a section is dull, simply snap for a new cutting edge. Manufactured from high-quality carbon tool steel for unmatched sharpness. Can be used in OLFA 18mm knives Cuts carpet, house wrap, nylon, plastic sheeting, plastic straps, shingles, shrink wrap, tape, turf, twine/rope, and more. Olfa Catalog Product Videos Custom Field Product Reviews Write a Review Write a Review × Olfa 5 Pc. LH-20B 18mm Silver Heavy Duty Hook Snap Blade 9005 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *