Four piece plug cutter and drill countersink set. The set comprises Quick chuck, Drill/countersink, Pozi 50 mm screwdriver bit and standard plug cutter. Heat treated tool steel countersink with a HSS drill.Adjustable for different length screws and can produce a counterbored hole for woodplugs. The drill produce pilot holes only. Plugs are very slightly tapered. Recommended for use with a pillar drill. Use on timber to make plugs/pellets to plug screw holes.