Material: carbon fiber, heat treated, strong and design, safe and hygienic product for your safe and convenient travels.Diameter: 72-74 mm, Weight: . 40 g. It is a good size, easy to carry and keeps you hydrated while riding - quick access to the bike water bottle when needed. perfect for road, mountain, hybrid, touring and electric bikesPerformance: built-in screw design ensures placement without affecting shifting, super tough, 't deform and break when exposed to strong impacts, this is an ultra-light bottle holder with fixing screws, so light you 't even feel it. The recommended bottle cage is perfect for road and mountain bikesThe best product: sophisticated look and vision for a different look, easy to install (2 bolts): reinforced facilities for road vehicles and mountain bikes designed to stable placement and easy access to the water bottle while ridingColour:blackMaterial:carbon fiberPackage Contents:1 x water bottle holder2 x screws1 x spannerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.