18mm Heavy-duty Insulation Blades, 3 pack (LWB-3B) | OLFA - Professional OLFA – Professional


  • 18mm solid insulation blade
  • Made from high-quality carbon tool steel
  • Has a serrated edge
  • Exact 59 degree front-edge angle optimizes cutting power and minimizes blade breakage
  • Fits all OLFA PRO 18mm utility knives
$8.17 Suggested MSRP
Where to Buy

For cutting porous or slippery materials, choose OLFA® solid insulation blades. These carbon tool steel blades have a serrated blade edge that allows the blade to glide through porous materials. Use these blades for heavy-duty cutting including insulation, vinyl coated pipe cover, fiberglass, wool, rope and more . (LWB-3B, #1119182)


OLFA cutter & non-disposable scraper handles, locking mechanisms, and 9mm standard duty blades, 18mm heavy duty blades, 25mm extra-heavy duty blades, safety and trapezoid-shaped blades and scraper blades are subject to the Corelle Brands d/b/a/ OLFA - North America satisfaction guaranteed or replacement policy.*

If at any time you are dissatisfied with these “Satisfaction Guaranteed” products, Corelle Brands d/b/a/ OLFA - North America will provide an equally valued replacement. Please allow 4 to 6 weeks for delivery of replacement product. Should you be dissatisfied with any such product, please keep it. You may be asked to return it. Please contact our Consumer Care Center for warranty claims.

*PLEASE NOTE: This Policy does not apply to OLFA TouchKnife®, OLFA scissors, OLFA mats, OLFA rulers, disposable OLFA multi-purpose scrapers, all styles and models of 18mm, 28mm, 45mm, 60mm, rotary cutter replacement blades, and all styles and models of “KB” art knife replacement blades.