CRANK SHIMANO DEORE M5100 can use 11,10,9,8speed.

SHIMANO DEORE FC-M5100-1 crank for 1x10 or 1x11-speed drivetrain M5100 Crankset SHIMANO DEORE FC-M5100-1 CRANKSET - 32T 170MM, 10/11-SPEED The Shimano Deore crankset FC-M5100-1 are cranks with only one chainring, which was designed for 10-speed and 11-speed drivetrains. The chainring is not mounted directly but via a 4-arm spider. Thanks to the 2-piece construction, a balanced ratio of stiffness to weight is ensured. Specifications: Compatibility: Shimano 1x10-speed, Shimano 1x11-speed Chainring Mount: 96 mm pitch circle, 4-arm asymmetrical Technical Information: Series: Deore M5100 Crankarm Material: aluminium Chainring Material: steel Axle Material: steel Gradation: 32 tooth Crankarm Length: 170.0 mm Chainline: 52 mm Q-Factor: 178.5 mm Axle Diameter: 24 mm