Bonita tubes are only available in black inside and out.
Black interior keep tuna calm and alive longer.
Quick disconnect mounting brackets, for transom mounting are anodized then white powder coated for long life. Small transom mount nuts mount to transom, tuna tube brackets clip to nuts. Tuna tube set comes with 6 inch insert for smaller bait. 2 sets of brackets mounted together, only require 4 mounting nuts on transom. The compact design allows for installation on small boats up to large sport fishers.