Regarding the specification of this fin, please see  http://antigkiteboarding.com/board-technology.html 

The size of this fin is 1.75 inch.

1.75 inch fin is a middle size.

It is good for player to play kiteboarding in any water condition except the big wave riding.

The price of one fin is about USD 8.3 include 2 screws.

We provide white, black, orange, green, transparent color fins to be chose to match with your kiteboard.

Please tell us what ordering quantity and what fin's color do you need via bellow chioce bar.

If you have any question about our products, please email hank@tkc.tw