1 pair marine-grade (SS316L) stainless steel straps with TX30 screw interface for ease-of-installation. Length 570mm (22.5"). Width 14.3mm (0.57"). Thickness 0.68mm (0.03"). Compatible with a wide range of Axis pole mounts. Pole diameter range 50-150mm (2"-6") when used with AXIS T91B47 Pole Mount.