the Lord of Tools 5pcs M8 Bicycle Crankset Single Chainring Chainwheel Bolts & Nuts Kit Red 7075 Aluminum Alloy MTB Disc Screws For Road Bike Mountain

[Nut Dimensions]: Nut Shaft Diameter: 10mm .Nut Shaft Length: 4.5mm [Bolt Dimensions]: Bolt Head Diameter: 8mm .Bolt Head Length: 6mm [Usage]: Used for universal single chainring/chainwheel to fix the crank and chainring. [Application]: Fits for mountain bikes, road bike, folding bike, fixed gear bike, downhill bike, track bike, MTB, BMX, DH, etc [Material]: Made of aluminum alloy, lightweight, stable, durable, and not easy to crack or rust.