It is the one that goes straight down. You either need a long, and I mean longer than a standard Halfords one, posidrive screwdriver, or you can get a ratchet spanner direct on the hex head off the adjuster. It's a long time ago I did mine so can't remember the size.Hello. If this headlight refers to I20N, Then which screw of them adjusts the hight of the high beem please?

