Unique tooth geometry which features a three-sided edge design. The teeth are induction hardened, so they will hold their edge longer and resist damage that could occur when contacting nails and staples embedded in wood, also has a low friction ToughCoat blade coating that keeps the saw cutting smoothly through the material with less binding and the rigid aluminum handle helps you stay on your line. Three-sided tooth cuts up to 50% faster than traditional handsaws. Three-sided tooth cuts up to 50% faster than traditional handsaws. Induction hardened teeth stay sharp for long life. ToughCoat long-lasting, low-friction coating for less drag.