Mast Mounting U-bolt clamp kit, for Ham UHF VHF CB Cellular Trucker antennas to mast/ tube/ pipes/pole for outdoor applicationsThe double U-bolt design to work with 3G 4G 5G LTE Puck Style antennas for Sierra wireless,CradlePoint Wireless Puck Antenna gateways.[MATERIAL]U-bolt is manufactured from Zine-Plated Steel with anti-rust coating finish.L sort Bracket is product of aluminum[JAW BLOCKS MAKE IT MORE STABLE]Antenna mast clamp kit makes use of jaw blocks with two lengthy bolts to provide a more potent install for ensuring the pole not slip down.[Robust and Beautiful]Solid design,strong and durable,beautiful and wear-resistant.Colour:As shownMaterial:MetalPackage Contents:1 x U-bolt clamp kitOnly the above package content, different merchandise are not included.Note: Light capturing and various reveals may cause the color of the item in the photo a little different from the real thing. The size allowed error is +/- 1-3cm.