The HSMQ is the smallest 2400ws Flash Head with a modeling light in the whole world! It's not crazy expensive for what you get in this tiny Flash Head. It has the same high quality circuits and flashtubes and modeling bulb as the more expensive Heads, just in a smaller molded enclosure. The HSML is electronically the same as the larger heads except for the lack of the household sync connector.
This is an awesome Head for on a camera bracket or boom arm since it is so small and lightweight. If you wanted to use it on a light stand, it has twin 1/4-20 mounts for the stand and an accessory of your choice.
This Head includes a grid and diffusor set with the reflector, a Modeling Bulb (AMBR) and 2400ws Modeling Flashtube (AFTQ).