This large 4" spoilboard surfacing bit is designed for use with CNC machines.
On this bit, you will never need to get your cutting edges professionally sharpened, thanks to the 4 sided replaceable inserts. Simply loosen the screw, rotate 1/4 turn, & retighten screw for a brand new, razor sharp cutting edge.
The bit comes with 1 set of inserts already installed.
Spoilboard Insert Carbide 6 Wing, Surfacing CNC Router Bit
Amount of inserts required = 6
Insert Size: 15 x 15 x 2.5-square (R150 will not fit)
Shank diameter: 3/4"
Bit diameter: 4"