The KF887 Rixen & Kaul Distance Adapter 25mm is an accessory that allows you to adjust the distance between your handlebars and your bike's stem. Here are some features of this product: -Compatibility: The Distance Adapter is compatible with most bikes that have a 1 1/8 inch (28.6mm) steerer tube and a 25mm handlebar clamp diameter. -Adjustment: The Distance Adapter allows you to adjust the distance between your handlebars and your bike's stem by 25mm (1 inch). This can be useful if you want to fine-tune your bike's fit or if you need a bit more space between your handlebars and your bike's stem. -Design: The Distance Adapter has a simple and sturdy design. It is made from high-quality aluminum and features a black anodized finish. -Installation: The Distance Adapter is easy to install. Simply remove your bike's stem and place the Distance Adapter between the stem and the steerer tube. Then, re-install the stem and tighten everything down. -Compatibility with other Rixen & Kaul accessories: The Distance Adapter is compatible with other Rixen & Kaul accessories, such as the KF850 and KF852 Klickfix Handlebar Adapters. This allows you to customize your bike setup even further.