Most Wise bass boat seats come with 9.5in hinge. This makes the seat back rub right on your tailbone all day. Increase the hinge with this 11.5 hinge and you will be able to fish again the next day without lower back pain. New Iboat seats come with the 11.5in hinge so you only need this on your old stuff. This also works great for power wheelchairs. Iboats is the only place I could find these 11.5in hinges. These guys have got it figured out. They will continue to be my first choice.
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