This reducing rubber is ideal for SUPERNOVA UNIVERSAL HBM and AIRSTREAM HBM (31.8 mm). It serves as an adapter for 25.4 mm handlebars and is UV - resistant. Article number: W - UHBM25.4 - AD. EAN: 4260224791702.

Using this shim is easy. First, make sure your handlebar is 25.4mm in diameter and your mount is 31.8mm. Then, simply place the shim between the handlebar and the mount. As for maintenance, since it's UV - resistant, it can withstand sunlight well. But try to keep it away from sharp objects to avoid cuts. If it gets dirty, you can clean it with a mild soap and water solution and let it dry thoroughly before using it again.