Six Shooter KnucklesTM are sold as a pair and include our set of special 6 hole shims for use between the top of the knuckle and the steering arm. Also included is a 1/2" coarse thread bolt to help remove the steering arms for knuckle service. To remove the steering arms, remove all 6 nuts, then install the bolt in the top of the arm. As the bolt is tightened, the steering arm is pulled up off the knuckle. Stock lower bearing plates and shims from your old knuckles are needed for knuckle assembly. A minimum of four additional steering arm studs are needed for installation. No questions asked, lifetime warranty on all knuckles,