Small Ball studs are made with the smaller 1-7/16" ball used on upper ball joint. This allows a smaller housing for added rotor clearance.The compact ball joint combines the small XD housing of Chrysler upper with a large Chrysler Lower stud. Developed in co-operation with Endless Innovations who builds a lower a-frame that will accept this ball joint. The compact housing allows for added clearance from the rotor. Available in standard and XD.Howe ball joints offer very low resistance while still fully capturing the ball to maintain alignment. All Howe ball joints are user rebuildable with an unmatched selection of interchangeable studs and housings. The alloy steel ball studs that are process coated for low friction and long wear. The XD Housing is 300% stronger in end of travel load testing. The added strength is in the mil-spec alloy housing. The cap is held securely in place with a hex lock and snap ring.All Ball joints come standard with a "0" length stud that is equal to stock length unless stated otherwise. Ball Joints do not come with a boot, if you require a boot they must be purchased separately.Hybrid - Fits K727/K772 Small Ball studs are made with the smaller 1-7/16" ball used on upper ball joint. Stock Application: 60-66 Imperial Lower Stud with 65-89 Chrysler upper housing. Racing Application: Grand National and Cup cars with small housing lower a-frames.Pit Stop USA offers Howe XD Precision Lower Ball Joint w/ Small Ball Stud - Screw In - Hybrid - Fits K727/K772 22412SBX at low everyday prices. Be sure to check out all of our products from Howe Racing Enterprises including Howe Screw-In Lower Ball Joints;Low Friction Lower Ball Joints.