A replacement shell for a Single Shot Plus HL-EL610RC,including holder, that also fits some Chineese led headlights. The holder won't fit the original, as this was a flawed design that was too nose heavy, leading to catastropich failure within one season of commuting, making you want to print this thing.Both holder and shell should be printed with support. The screw holes in the holder is M5 and should be tapped before it's mounted. Don't print it in a transparent material like I did, it is very bright up in your face on a pitch dark road.. ;)