There was an earlier thread about quality Allen wrenches. I picked this set of metrics up for $11.99. Made from HSS (high speed steel / drill blank) they won’t round the inside of the screw out or round the edges of the tip off. Replacement tips if needed can be had from www.horizonhobby.com.
While I was shopping I ran across some o rings I need for my Impact. Along with the package of o rings was a standard / metric o ring sizing chart. This was the best deal of all and it was free! Now I can sort and size all of the dozens of random o rings and catalog them taking the guess work out of what I have.
here is a link to the chart directly. You can download one from there if you wish.
https://www.orings-online.net/index.php?main_page=page&id=1&zenid=njYrwSsCEgfVMpbtcc6gm3
While I was shopping I ran across some o rings I need for my Impact. Along with the package of o rings was a standard / metric o ring sizing chart. This was the best deal of all and it was free! Now I can sort and size all of the dozens of random o rings and catalog them taking the guess work out of what I have.
here is a link to the chart directly. You can download one from there if you wish.
https://www.orings-online.net/index.php?main_page=page&id=1&zenid=njYrwSsCEgfVMpbtcc6gm3