I bought some McGard ones. They're decent enough and you can order replacement keys etc
It should already have a set of lightweight rays nuts which included a locking nut per wheel.
it normaly says what car it fits in the pack the lentgh you need is a trial and error thing. Just stay away from the 3 pin typeBit of both, You will need to know your thread type of the studs on your car and the seat of the alloy wheel.
+1I bought some McGard ones. They're decent enough and you can order replacement keys etc