These H&R wheel bolts are Type 14, thread pitch 1.5, with a 47mm shank length and a Mercedes-compatible ball seat. They use a 17mm hex and are finished in black. Specified for wheel mounting where these dimensions and seat style are required, the bolts are intended to match Mercedes applications calling for a ball-head, 17mm fastener of the given length and pitch.
H&R Wheel Bolts Type 14 X 1.5 Length 47mm Type Mercedes Ball Head 17mm - Black