This round U-bolt kit fits Mack suspension applications and is sold as a 2-piece pack. Each kit includes one round U-bolt along with two nuts for a complete installation. It wraps around the axle housing with threaded ends passing through the spring plate to secure the axle to the leaf spring pack.Interchanges:Mack 7QK2174M4FUB-5326This unit is sold in packs of 2.FeaturesRound U-bolt kitSold as a 2-piece packKit includes one round U-bolt (FUB-5326-001)Includes two nuts (HNU-5836, OEM 21AX406)Suspension parts groupTech SpecsKit contents: 1x Round U-Bolt (FUB-5326-001), 2x Nut (HNU-5836, OEM 21AX406)Sell pack: 2 pieces