Rosewill RLFL-11002 3W 220 Lumen Cree LED Aluminum Flashlight w/Bicycle Bracket Durable 3 Watt 220 lumen Cree XPE-Q5 LED maximizes output and runtime Convex lens create a smooth, powerful beam Easy to install with bicycle bracket, ideal for mountain climbing, biking, camping, hiking and other outdoor sports. Corrosion resistant (aluminum 6463 T6,aircraft grade) The bike mount of RLFL-11002 suits to 23~32 mm diameter handlebars.