I have to say that Laserlands or Basrem make nice heads but their 12v power supplies are SH*&^EW and one member here is right CHEAP and I am about to throw it through the window. the molex connector falls apart. I solder the wires on.. still don't work I had a devil of a time to attach it to an aluminum plate and then i have to find a 12v power supply on and on and on. I hate HATE HATE HATE Basrem 12v power supplies and the next time I order one of their lasers it BETTER come with a 110v power supply. I think it is fried. and I hope they send me a new one. Still waiting on my replacement laser. I bet the flickering on the other one is power supply issues guarantee it their heads I think are great. they need to sober up their power supply manufacturing ..