Culture Supply TFX Composite Quad Trailer Fins (2) in a NATURAL color 
 
2 Trailer fins for quad-fin setups
Flexible Polymer Material
Fins fit 1/2" deep Future quad fin boxes 
Our TFX Composite quad trailer fins set comes with a Culture fin key and FREE Culture Supply Co. sticker 
 
If you have a surfboard with a quad 4-fin setup these fins fit the back two fin boxes that are a 1/2" deep. The front fin boxes on a quad 4-fin setup are 3/4" deep and take a regular side fin. 
 
If you have a 5-fin setup, pair these quad trailers with a set of our TFX tri fins to have the option to ride your board as a quad or thruster.