Deore CS-M6100 12-speed 10-51t cassette Size:One Size it offers the best scratch

it offers the best scratch and solvent resistance

Fully insulated draft collar seals in inner heat without adding much weight

Breathable Paper/Polyester/Cotton Weave

The headwaters of the American River are located in the wilderness

Deore CS-M6100 12-speed 10-51t cassette Size:One Size it offers the best scratchThe Shimano CS M6100 12 speed cassette is designed for use with Deore M6100 drivetrains. Use with Hyperglide+ chain All steel cogs Designed for single front chainring setup Micro Spline interface Color: Silver Cassette Body Type: Shimano Micro Spline Drivetrain Speeds: 12 Defined Color: Silver Cassette Cogs: 10 12 14 16 18 21 24 28 33 39 45 51 Range: 10 51