Key specifications - Outer diameter 24 mm, inner diameter 16 mm, expandable adjustable locking type, total length 45 mm - Suitable for handlebars with inner diameter over 17 mm - Applicable screwdriver size: 3 mm hex screwdriver Material and design - Made from rubber and aluminum - Lightweight, strong, durable - An accessory to beautify and customize bicycle handlebars How it works and benefits - Provides cushioning to reduce damage to handlebars and grips from falls - Adds color and style to your bike - Easy installation: no tools or screws required, simply press in with a hammer or by hand - If you choose to use a 3 mm hex screwdriver, it is compatible, but no screws are required for standard installation Compatibility and use cases - Compatible with most bicycles including folding bikes, road bikes, mountain bikes, and other adult bikes - Fits handlebars with an inner diameter greater than 17 mm Use scenarios - After a fall or crash, use to protect the handlebar end and grip area from further damage - Upgrading the visual appeal of your bike by adding color and a finished look - Quick enhancement for folding bikes, road bikes, or mountain bikes during routine upgrades or replacements of end components