Set of 5 left-handed twist drill bits for drilling wood, acrylic, aluminum, and plastic (3.175 x 2 x 12 mm)

3000~5000 18,000 ~ 20,000 rpm Specialized in processing acrylic, PVC, plastic, organic, and other types of panels. Machine tools, advertising engraving machines, CNC machining centers, computerized flower-making machines, etc. In addition to the specified restrictions, the blade length should extend 2 to 5 mm beyond the plate. If it is too long, the blade will break easily. Some customers believe that the slower the knife moves, the less likely it is to break. In fact, this is not the case: the sharper the knife, the slower it moves, and the easier it is to burn the knife and break the blade. It adopts a mirror-like sharpening process, a large-capacity chip-removal groove, a sharp cutting edge, a smooth and delicate cutting surface that is wear-resistant, requires no polishing, and is non-stick, smokeless, odorless, and quiet.