As a result of my tests I determined that these Cyclone Replacement Tips are top-notch .They fit securely on my tools and have proven to withstand heavy use without chipping or breaking. I also appreciate how they come in a convenient 2-pack. The only downside is that they are a bit pricier than other replacement tip options on the market. Overall, i highly recommend these tips for anyone in need of reliable replacements in the Industrial and Scientific field..