Countersink Drill Bit Set 5-Piece, M2 HSS, 82 Degree, 5 Flute, ¼” Quick Change Hex Shank, 1/4” 3/8” 1/2” 5/8” 3/4” Sharp and Durable Countersink Bits for Metal Wood and Plastic, with Storage Case

Countersink Drill Bit Set 5-Piece, M2 HSS, 82 Degree, 5 Flute, ¼” Quick Change Hex Shank, 1/4” 3/8” 1/2” 5/8” 3/4” Sharp and Durable Countersink Bits for Metal Wood and Plastic, with Storage Case

Carbide Blades Deburring Tool, Chamfer External Edges of Threaded Rod Bolt Pipe, Remove Burrs for Copper Metal 3D Printing Resin PVC Parts, Burr Removal for 3/16"-1" Diameter (5-25mm), Hex Shank Bit