Hole Cutter With Exchangeable Arbors
A countersink bit is a type of drill bit that allows you to widen the entrance to a pilot hole so that the screw head is flush with the surrounding metal rather than sticking out on top of it.
A countersink bit is a type of drill bit that allows you to widen the entrance to a pilot hole so that the screw head is flush with the surrounding metal rather than sticking out on top of it.