End Mill 1/8, EnPoint Mill End Cutter PCB End Mill 3.175mm Shank 1.5mm Cut Dia 8.5mm Flute Length Milling Bit Solid Carbide End Mill for PCB Carbon Fiber Board Insulation Board Oak Wood Produced from a premium ultra fine Nano Grade carbide for maximum tool strength and durability With advanced grinding processing, comes sharper cutting edge and less breaking The cutting edge is strictly symmetrical, which is very helpful for cutting efficiently Sharp cutting edge produces an excellent surface finish Can cut cleanly, neat and little chance of burring