Spiral bits provide a shear cutting edge that leaves a smoother cut than standard router bits. The down cut spiral design provides the best top surface edges, ejecting chips away from the router when routing through material. This design also decreases the tendency to lift thin/small work pieces during CNC routing.
We had a little hiccup with a previous order but they reviewed my photos and information and made it right.
I will not hesitate to keep ordering from them in the future
This is if memory serves my 4th shipment from KJP & the 2nd containing Bolivian Rosewood. The product is well packaged, the choice of boards & the milling are top notch. Shop here with confidence.