`- Left and right bottom bracket cups with standard bearings for FSA MegaExo cranks\n- BB-9050 is for 24mm spindle 68/73mm MTB K-Force and Team Issue cranks\n- BB-7100 is for 24mm spindle 68/73/83mm or 100mm shell works with Di2, NBD alloy and carbon cranks\n- BB-6200 is for 24mm spindle 68mm shell Energy, Gossamer and Omega No Bolt Design cranks\n- BB-6000 is for 24mm spindle 68mm shell Energy, Gossamer and Omega cranks\n- BB-4000 is for 19mm spindle 69mm shell Omega cranks\n- BB-1000 is for 19mm spindle 68/73mm MTB Gamma cranks\n- 1.37" x 24tpi (English threads) or M36 x 24tpi (Italian threads)