Strengthen your vehicle and help eliminate squeaks, rattles, and t-top leaks with Granatelli Motorsports sub-frame connectors.�Their unique tubular design is stronger than any square tube sub-frame connector and it nearly eliminates body flex (great for vehicles with t-tops) while losing no ground clearance, even on lowered vehicles.� Each system is constructed of 1.75inch diameter .134inch wall drawn over mandrel steel tubing which is precision welded. Includes premium hardware and detailed installation instructions.