This is a pic of the 32 - 43 Watt Version with POT (10 to 18 Volts) (This ballast from Mule and Maximus builders)
Weight is only 6.6 ounces for ballast and bulb!
I have requested the version that is switchable with resistors instead of POT and is running at 30 - 60 Watts and switchable with press of a button...
Pics for size comparison to Mags... The Blue Tube is a sample of a host for this ballast...


The Yellow Light is a new light like the Black one which is an old Coleman adjustable Halogen light... There virtually Identical
.