Brackets provide an upper and lower mounting location for axle tube strut rod. Center support bracket attaches to the top of side bell bolts on most quick change rear ends and is notched for clearance of bell support rib on old style rear ends. Axle tube bracket (#ALL68324 / ALL68322 sold separately) clamp around most 3" axle tubes. Strut rod mounting holes are 1/2".Pit Stop USA offers Allstar Performance Quick Change Axle Tube Support Bracket - Center Section ALL68320 at low everyday prices. Be sure to check out all of our products from Allstar Performance including Allstar Performance Axle Tube Strut Rod Brackets.