Fits 2015-2017 Mustang GT, 2.3L EcoBoost and V6 Rear hubs equipped with ARP Wheel Studs M-1107-B Kit includes: One pair of upgraded rear hubs with 3-inch ARP wheel studs Hub attachment bolts Open end wheel lug nuts M-1012-N Axle retaining nuts 3" ARP Stud Specifications: Wheel Stud Style: Press-in Thread Size: M14 x 1.5 RH in. Knurl Diameter: 0.625 in. Under head Length (in): 3.4 in.