Easy to install. Easy to carry. And compatible with pretty much any bike with a steerer tube. The included 9 function Multi Tool contains your most used tools and lives inside your stem/steerer tube. Weight: 75gColours: Black, Red, Blue, Green, Orange, Purple, TurquoiseFunctions: 2, 2.5, 3, 4, 5, 6, 8mm Hex, T25 Torx , Flat Head Screwdriver