After trying a well-known brand's titanium industrial drill bits, I was not expecting much from this relatively new name in the market. But JEFE HEX Titanium Aluminum Plastics Cutting Tools surprised me- these are really efficient and fast. They cut through aluminum and plastics with ease, leaving a smooth finish. The sizing is accurate and they are well built. However, I found they can struggle with harder materials like steel. Overall, this is a great product for anyone in need of cutting tools within an industrial and scientific category.