CeramicSpeed BBright Bottom Bracket - 24mm Spindle Black MFPN=HFA402 These IS headsets are for

These IS headsets are for frames with molded-in internal bearing cups

They are compatible with the majority of 110 BCD 5-bolt cranks

SRAM Model ID: AC-STD-CBLB-A1

Micro-square block center tread with file style shoulders provides excellent grip while remaining fast rolling

Removable floor for easy cleaning

CeramicSpeed BBright Bottom Bracket - 24mm Spindle Black MFPN=HFA402 These IS headsets are forThe CeramicSpeed BBRight bottom bracket offers bearings with extremely low friction improved power transfer and a service life that far exceeds traditional steel bearings. Bottom Bracket Shell I. D. 42 BB Frame Interface BBright Direct Fit BB Shell Width (mm) 84. 5 Spindle Interface Type RaceFace EXI Defined Color Black Spindle Type 24Mm