Cassette SRAM 850 8-Speed 12-23T ModelNumber=K3909 Hardware with mounting plate is

Hardware with mounting plate is T25 Torx head

5 Damping Adjustments External rebound 2 pos remote comp (open/lock) Lower Tubes Material Magnesium Maximum Rotor Size 200mm Brake Type Disc Rake 44mm Stanchions Material Aluminum Damping Charger RL Maximum Tire Width 60mm Spring Type DebonAir

As bearings become coated with the Teflon and ceramic particles friction and heat is dissipated

Color Black Intended Brake Type Linear Pull Pad Attachment Style Threaded Post Pad Type One Piece Rim Compatibility Standard

model nano airbooster L description inflator head presta/schrader CO2 included no color black weight 13g

Cassette SRAM 850 8-Speed 12-23T ModelNumber=K3909 Hardware with mounting plate isSRAM PG 850 Cassette 8 Speed 12 23t Silver. Cost effective repair or upgrade cassette. Shimano compatible TECH SPECS Color Silver Range 12 23 Cassette Cogs 12 13 14 15 17 19 21 23 Cassette Body Type Shimano SRAM 8 9 10 Speed Drivetrain Speeds 8 Weight 188 Defined Color Silver