SRAM S1000 Eagle T-Type Direct Mount Chainring - 30t 12-Speed 8-Bolt Direct Mount 3mm Offset Aluminum BLKSRAM S1000 Eagle T Type Direct Mount Chainring 30t 12 Speed 8 Bolt Direct Mount 3mm Offset Aluminum Black. The SRAM S1000 Eagle T Type direct mount aluminum chainring is bash guard compatibility and availability in three different tooth counts. Strong and light weight aluminum Compatible with T Type chains SRAM 8 bolt direct mount design (Includes mounting bolts) 3mm Offset TECH SPECS Tooth Count 30Drivetrain Speeds 12Round or Oval RoundOffset