Features and Benefits: With the No. 5038 there is no need to remove the bearing hub assembly just to replace the pins and bushings on 16-1/2 S-cam trailer and tractor Q brake systems. Much less complicated and time consuming! Special tooling and our C-frame press get you past the hub assembly so you can do the job quickly and professionally without damaging other parts. Special tooling and our C-frame press get you past the hub assembly so you can do the job quickly and professional without damaging the other parts Includes everything needed for removal and replacement. Tooling is available separately for the tech who already owns the OTC7248 C-frame press. Set includes C-frame press and tooling in a plastic storage case. Made in USA Lifetime Warranty With the No. 5038 there is no need to remove the bearing hub assembly just to replace the pins and bushings on 16-1/2 S-cam trailer and tractor Q brake systems. Much less complicated and time consuming!