DeMello Off-Road was the first to build,test, use and sell our world famous bed bars. We were also the first to find out that not all Hi/lift jacks are built the same. So we came up with these Adjustable Hi lift clamps they can be mounted on any 1.75in round tube anywhere on your truck. These trick little clamps are aluminum and light weight with stainless mount hardware and 1/2in stud to mount your jack too.