The IVY Classic 01538 High Speed 135 Degree drill bit is an impressive addition to any industrial and scientific setting. My analysis of this product showed that it delivers precision and performance with ease .The high-speed steel construction ensures that it can cut through even the toughest materials with ease. However, it may not be the most cost-effective option on the market. Overall, if you're looking for a reliable and efficient cutting tool, IVY Classic's 135 Degree drill bit is a cut above the rest..