Summary My toddler wanted a bell on his Strider. Unfortunately, the bells at the bike shop are designed for standard handlebar diameter's, not a Strider's 0.5" diameter bar. Luckily, my 3D printer makes a great adapter! This adapter should work for anything that normally mounts to standard 25.4mm bars. I want to see a picture of someone mounting their Garmin to their kid's Strider for some Strava-busting. I included the Solidworks 2013 .prt file for your remixing needs. Instructions I printed in ABS, 0.2mm layer height, and 25% fill. Pretty much any settings should work for this part though.