HSS chamfering cutter 30 40 50mm 90 degree three-edge chamfering drill reaming round hole trimmer countersunk headFeatures: Can be a one time cone processing. Suitable for small amount of cutting processing. Chamfering process of machining to produce debris is more convenient, not because of the delay of tools blockage and working efficiency. Any tools or methods are not enough to the position, the automatic chamfering knife can be in some seconds will be drilling on both sides of the quick fix a chamfered edge. Description: Specifications: three blade, 90