Bosch CB740AB 7-1/4-Inch 40 Tooth ATB Finishing Saw Blade with 5/8-Inch and Diamond Knockout Arbor Patented C-3 Dyanite carbide teeth are diamond ground to be precision sharp from the start and stay sharp up to 6X longer than standard carbide Impact resistant tri-metal shims between each carbide tip and the blade act as shock absorbers in tough applications A fully hardened thin kerf plate means less material is removed which allows for a faster cut while still remaining straight and true Expansion slots reduce blade warping