High-concerned chemical: None Exquisite Design Pipe adapter, not included Before purchasing, please check if itmatches the diameter of your round tube Best travelCompanion, The aluminum alloy material can providethe best protection for your equipment Aluminum Bracket Tailored Specifically for Equipment, Precise compatibility with pipe adapter Freely adjustable angle, Get the best signal reception effect Adjustable bracket sizeSuitable for roundpipes with a diameter0.89-1.1inches Color: Black Material: Aluminum Alloy Package Contents: 1 * adapter 1 * aluminum alloy tube 2 * 6-point screwdrivers 1 * short handle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.