Please browse below url to learn more about this compression spiral router bit: (mobile only) https://www.eaglecnctec.com/wap/products/244-compression-bit.html
Tool type: spiral cut Flute type: compression (up and down cut) Debris removing way: compress Flute quantity: two Coating: without Raw material: carbide Origin: mainland of China Application: for cnc router using, good for cutting MDF, PVC, laminated board Package: each compression spiral router bit is individually packed in a separate plastic case