Material and weight Made from aluminium alloy. The saddle collar weighs about 40 grams, offering lightweight durability. The surface is not resistant to discolouration and corrosion over time. Design and craftsmanship Hollowed design: the handle of the saddle collar is partially hollowed, resulting in reduced weight and a slender, elegant look that can complement the bike's appearance. Tool installation and adjustment No tools required: installs easily and allows you to adjust the seat post height quickly and conveniently without extra tools. Compatibility and performance Versatile use: suitable for a variety of bikes, including road bikes, mountain bikes, and folding bikes, with an ergonomic design that enables quick and comfortable adjustments. Use scenarios Road riding: quickly adjust saddle height before long climbs or speedfocused sessions to maintain pedaling efficiency. Mountain biking: finetune saddle position midride for comfort on varying terrains and rider preferences without stopping. Shared bikes or multibike households: swap between different bikes or riders with minimal setup time, keeping saddle height close to each rider's preference.