Justin in IL
Works as designed. A must have for any DIY'r doing seal replacement. Don't half a## it and use PVC. This will give you the piece of mind that it was done correctly.
Like I said it is a must for every bike. Relieves built up air so forks can work as designed. Make sure you release air while its on a stand with no load on it. Much easier than unscrewing screw.
Samuel in TX