# Question about PGM axle type **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [April 12, 2011, 4:19am UTC](https://forums.yoyoexpert.com/t/question-about-pgm-axle-type/25512 "2011-04-12T04:19:04Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Doeboyonastring](https://avatars.discourse-cdn.com/v4/letter/d/dfb087/32.png) [@Doeboyonastring](https://forums.yoyoexpert.com/u/Doeboyonastring)\ **Post date:** [April 12, 2011, 4:19am UTC](https://forums.yoyoexpert.com/t/question-about-pgm-axle-type/25512/1 "2011-04-12T04:19:04Z")
I was wondering what axle type a PGM has inside it. Is it a hex bolt type or a set screw type? I plan on trying to tune my PGM, but I am not sure what type of axle it has. ---
**Author:** ![skeletonboy333](https://avatars.discourse-cdn.com/v4/letter/s/b2d939/32.png) [@skeletonboy333](https://forums.yoyoexpert.com/u/skeletonboy333)\ **Post date:** [April 12, 2011, 4:50am UTC](https://forums.yoyoexpert.com/t/question-about-pgm-axle-type/25512/2 "2011-04-12T04:50:52Z")
It’s not a hex bolt. A normal hubstack axle. Axle’s used for stacks are usually longer. Just a normal axle but longer. Precisley: It’s a 25mm axle. ---
**Author:** ![Doeboyonastring](https://avatars.discourse-cdn.com/v4/letter/d/dfb087/32.png) [@Doeboyonastring](https://forums.yoyoexpert.com/u/Doeboyonastring)\ **Post date:** [April 12, 2011, 5:05am UTC](https://forums.yoyoexpert.com/t/question-about-pgm-axle-type/25512/3 "2011-04-12T05:05:57Z")
Looks like the teflon tape will be coming out then. 🙂 ---
**Author:** ![jhb8426](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jhb8426/32/631_2.png) [@jhb8426](https://forums.yoyoexpert.com/u/jhb8426)\ **Post date:** [April 12, 2011, 5:06am UTC](https://forums.yoyoexpert.com/t/question-about-pgm-axle-type/25512/4 "2011-04-12T05:06:21Z")
Then again, it depends on if it has hubstacks or not. If it’s not hubstacked, it uses a bolt.