Available while supplies last. Only 10 remaining. No returns or exchanges. Tough: Built from aircraft grade 6061 aluminum, not stamped stainless steel, or thermoplastic, so it can stand up to the same punishment that you do. Patented "Under the Brim" mounting position, Stainless Steel hardware, and embedded allen tool. Lightweight: only 2oz Dimensions: 6 x 3 x .5 in Necessary: Superior under brim patented design securely holds the light on the helmet where you put it, where you need it....