I recently obtained a 1 1/4" Tublug and a Parallizer from Howie Glatter. I already have a Cheshire combination tool and GSO laser collimator. Previously I used the barlowed laser method to align the primary mirror, but this could be awkward using a mirror to check the reflection of the ring on the back of the collimator. Since I have scopes with both 1 1/4" and 2" draw tubes the above seemed a good idea. It was.
The Tublug enabled me to complete the primary mirror tilt in about a minute for each scope. I am right chuffed. The parallizer centres and 'aligns' the 1/4" tools nicely in the 2" focuser.
Really these are excellent bits of kit, work as claimed, and save me time.