Kreg KPTCS450A 20V Ionic Drive™ 4-1/2" Circular Saw (Tool Only) Aluminum Blades and the stock you screw

and the stock you screw them onto will need to be at least 3/4'' thick

The serrations on the larger spigot jaws are on both the inside and outside of the jaws

and quartz

TiCo Hi-Density Carbide specifically designed for each application to provide maximum performance and cutting life

Kreg KPTCS450A 20V Ionic Drive™ 4-1/2" Circular Saw (Tool Only) Aluminum Blades and the stock you screwThe Kreg 20V Ionic Drive 4 " Circular Saw delivers powerful, precise, and clean cuts in a compact, easy to control design. The brushless motor provides high torque for clean, effortless cuts. Paired with the included premium SureCut Fine Finishing Blade, this saw delivers smooth, accurate results every time. An auxiliary handle gives you ultimate control during precision cutting. The soft start motor allows for slow ramp up to desired speed for a less