I would think that you could use just about any carbon rod that is the right diameter cut to length and just once you get your paddles level and the grub screws locked, put a drop of ca on the bar where it meets the paddle, wicking action will pull the ca into the joint and lock the paddle in place, it should thread itself as youtwist the paddle onto the rod so the ca might not be necessary, but I don't want a paddle flying off in the air and causing you to crash or maybe hurting someone, I'd rather glue it.