Adjustable titanium wingscrew set

Set of 4 adjustable wingscrews. Except for a small internal 316 stainless steel spring, machined completely from 6Al-4V grade 5 titanium for long term corrosion resistance.  Tighten fully by hand and, if the wingnut is not aligned with the water flow, simply lift, twist to align, and drop back down for minimal drag. Available in sizes to fit most masts.