ORIGIN 8 REVOLVR T47 TO FIT DUB INBOARD THREAD-IN SB BLACKForged and CNC machined AL6061 thread in cups for a superior fit and noise free operation Low friction dual seals protect the bearings from harmful contaminants Sealed premium bearings are both serviceable and replaceable Designed for installing Shimano HTII 24mm, SRAM GXP 22 24mm, SRAM DUB 28. 99mm, and BB386 392 30mm spindle cranks into T47 threaded frames Inboard thread in bottom brackets are compatible with 85. 5 86. 5 92mm wide T47 shells Uses BB