These brackets will provide a great platform to mount your light bar to a pipe, tube, bull bar, roof rack or bumper. The diameter must be 2" for this to work and hold the light securely.
The kit includes 2 x Heavy duty black anodized alloy mounting brackets. Your lights will come with the other hardware needed.
Dobinsons also offers the same in 3" (75mm) diameter, part number DL80-3771K for larger tubes.