Mevius Cone Seat Lug Bolt Sets are constructed from cold forged SCM435 hard steel. Available in three different lengths (27 millimeter, 40 millimeter, and 50 millimeter - sold separately), each Mevius cone seat lug bolt features a 60-degree taper and accommodates full stud engagement. Has a 17 millimeter hex. Mevius lug bolt sets include 20 lug bolts.