Countersink Drill Bit Set Chamfering Hole Cutter Wood Metal Deburring Tool 1/2 Square Drive To 1/4 Hex Socket Adapter Converter

[Feature]: 1. These flute countersink drill bit set are machined from high speed steels. 2. Five-flute designed with staggered cutting teeth aranged to insure free chip flow and rapid chatter free cutting. 3. Ideal for wooden planks, fiberboard, particle board, plywood, plastic, alumiumn board, pcb board and more. 4. Adapter securely holds any 1/4" hex-shank bit. 5. 1/2" Square Female Dr. to 1/4" Hex Female Socket Adapter 6. Convert any air or power impact wrench into a drill or ratcheting wrench into. [Note]: 1. When drilling, the speed is controlled well, and the drill is at a constant speed. This is a drill for slow drilling. 2. At the same time, the power of the machine must keep up, otherwise the drill bit will break. 3. When drilling holes, remember not to adjust the speed very quickly. [Special attention]: The angle of the drill bit is 90° for the red model and 82° for the other models.