HS1 12v 35/35w High Low Beam Super White Halogen Headlight Motorbike ATV bulb
HS1 is a new range halogen bulb with a PX 43t fitting. The only difference between the HS1 and an H4 halogen bulb, is that the middle pin at the base is 1-2mm thicker. Hence the notation PX 43t compared to P43t.