Spring-loaded technology for easy height adjustmentInfinite backboard adjustments between 8-10 feet on Wall-Braced and Ceiling-Suspended BackstopsCompatible with 72 Rectangular Backboards on Single or Double Mast BackstopsConstructed of 1 x 3 structural steel tubingNylon bushing helps provide smooth movement with the same rigidity of a system without a height adjusterHeavy duty spring with PVC coating reduces noiseGray powder-coated finishIncludes Crank Handle with Hook