Crossbar shims have an internal diameter of .5" /12.7mm, and an outer diameter of 7/8" / 22.2mm, so that you can mount accessories designed to attach to a 22.2mm handlebar on any .5" / 12.7mm diameter crossbar. The middle of your bars is such a convenient location, we wanna make the most of it!
-Shims are 1.25" wide, enough width for most things - bells, gps, etc.
-6061 aluminum, machined in house on manual machines. If these are popular enough, we may cough up to have a run CNC machined.
-Weighs 20 grams