Yosoo Carbon Steel Multitools Cycling Bicycle Bike Repair Tool Kit with Hex Socket Wrench Screwdriver Portable 11-in-1 Multifunction Functions Multi Tool 11 in 1 includes- Chain tool/ Allen keys(2, 2.5, 3, 4, 5, 6, 8mm) Flat Head Screwdriver/Philips Screwdriver tools all in one Foldable Size: 3.1x1.7x0.8inch(8x4.5x2cm ) Weight:0.4pounds(180g) Material- Made with stainless steel. Best tool kit to repair bicycle Compact small size handy to use and doesn't take up much space in MTB seat bag Comprehensive tool for bike enthusiasts