Diligent Defense Co direct thread adapters. These are simplistic and light as report this ad to the administ. -Industry standard 1-3/8"x24tpi (Fits all of Diligent Defense cans plus many others with the same thread) -Machined from 6-4 titanium -Features a hex on both sides of the product. -Adds 1/4" to the overall length of your can. Item Specifications: