Bike /scooter bottle holder pipe / Accessories bar adapter
thingiverse
Use a stem / handlebar water bottle adapter like this one: https://www.decathlon.co.uk/p/bottle-cage-handlebar-stem-or-seat-post-adaptor/_/R-p-119989  to attach an accesories bar / pipe to your bike or scooter stem. You can then use it to attach extra lights, horns or other accesories. Use zip ties or hose clamps to secure the bar in the adapter. Bar diameter is 21mm
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