Beveling Chamfer Bit Stable Working 60 Degree Wide Application Clean Edge Chamfer Drill Bit for Marble Specification: Item Type: Bevelling Chamfer Bit Material: Package List: 1 x Bevelling Chamfer Bit Note: This is not a core drill for drilling. It doesn t punch holes but when the edge is chipped or needs cleaning it slopes the hole cleans and reinforces the edge.