These over the barrel shrouds are for the intended purpose of protecting your barrel, dissipating heat and looks. They are made of grade 9 Titanium with a OD 1.5″, ID of approx 1.36″, .070 wall thickness and lengths as listed. They are threaded to the D-Maglite thread of 1.4375X20. MOUNTS (not included, sold individually) can be found under SDTA products, mounts.
Titanium anodizing can only be done on titanium components. Please look on main categorizes under titanium anodizing for more information. If you are looking to have 10 or more pieces anodized click NO on the drop down and order the anodizing under the titanium anodizing main category. This will save you money.