IS THIS UPPER JOINT EURO-PIN BASE WHAT I NEED?
The answer is yes if you already have the 2-Bolt Quick Release Plate (see below) and are just looking for the upper joint.
![Chinook 2-Bolt Quick Release Windsurfing Base Plate Chinook 2-Bolt Quick Release Windsurfing Base Plate](https://bigwinds.com/wp-content/uploads/2020/11/chinook-2-bolt-quick-release-windsurfing-base-plate-10x10.jpg)
IS IT COMPATIBLE WITH A DUOTONE POWER XT EXTENSION?
Yes, the Chinook Tendon Upper Joint Euro Pin windsurfing mast base is compatible with all Duotone extensions, including the Power XT.
![Duotone Power XT 2.0 Windsurfing Mast Extension 2021 Duotone Power XT 2.0 Windsurfing Mast Extension 2021](https://bigwinds.com/wp-content/uploads/2020/11/duotone-power-xt-20-windsurfing-mast-extension-2-10x10.jpg)
HERE AT BIG WINDS, WE GET LOTS OF WINDSURFING MAST BASE QUESTIONS …
What’s the difference between a Euro Pin or US base? What are their pros and cons? What about a 1-bolt versus 2-bolt base, or a tendon versus rubber base – which is better? Find side-by-side comparisons here.
![Screen Shot 2022-02-07 at 7.10.36 AM Screen Shot 2022-02-07 at 7.10.36 AM](https://bigwinds.com/wp-content/uploads/2020/11/Screen-Shot-2022-02-07-at-7.10.36-AM-10x10.png)
DOES A SKINNY OR SDM MAST DICTATE WHICH WINDSURFING BASE I NEED?
No. Windsurfing mast bases are not affected by the diameter of your mast, nor the diameter of your windsurfing extension. Find more on Skinny and SDM masts and extensions here.
![Screen Shot 2022-02-07 at 7.18.05 AM Screen Shot 2022-02-07 at 7.18.05 AM](https://bigwinds.com/wp-content/uploads/2020/11/Screen-Shot-2022-02-07-at-7.18.05-AM-10x10.png)