these are the distancing extension set, they are cheap and are not as strong as better brands but are a good starter set if you can get some straight ones. i recommend the 1/2" drive as the 3/8" long extensions start to twist too much.<br /><br />W32139<br />www.teespring.com/stores/catusmaximus<br />...<br /><a href="https://www.youtube.com/watch?v=nSjd5JKCZC8" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=nSjd5JKCZC8</a>