Weltool BB11 Extension Tube – Dual 21700 Battery Tube for F11R Flashlight Automatic The black-coated N680 blade is

The black-coated N680 blade is a nitrogen-enriched stainless steel (57-59 HRC) with outstanding corrosion resistance

18650 Battery x 1

300cd and beam throw of 251 yards

while lower pod provides load transfer

pointy and slightly upswept blade in Elmax steel (or “El Max

Weltool BB11 Extension Tube – Dual 21700 Battery Tube for F11R Flashlight Automatic The black-coated N680 blade isWeltool BB11 Extension Tube The Weltool BB11 (F11R ExtensionTube) is a flashlight accessory and dual battery extension tube made for the Weltool F11R flashlight. Installing the BB11 lets the F11R run two 21700 rechargeable lithium ion batteries (such as the Weltool INR21 60) for significantly longer runtime. Highlights Doubles battery capacity run two 21700 lithium ion batteries Made for the Weltool F11R flashlight Longer runtime for extended sessions