This model is for the Genmitsu CLF55 laser.  The laser body nicely nestles nearby its friends.  The puck holder is for the provided 16x30mm cylinder.  This model is designed for the large PROVer 4030 mounting plate and just barely squeaks inside the 2x4 grid (I cheated the wall thickness just a bit).

Be sure or orient your air assist directly back via the setscrew.

You might have been searching for Sainsmart, which appears to be the same brand.