The hex nut, which weights about 8,500 pounds, is painted silver with "Patriot Bolt" scripted on the top part of the nut and "Made in Texas" on the bottom. The diameter of the opening is 10 feet.

This super-smooth pan-and-tilt head has a trick up its sleeve, as Andy Westlake finds out The post 3 Legged Thing Airhed Vision review: pan-and-tilt with a twist appeared first on Amateur Photographer ...