Wheels Manufacturing PF30 to Shimano BBInstall 24mm Shimano cranks into PF30 frames without an adapter with the Wheels Manufacturing PF30 to Shimano Bottom Bracket. The threaded design equates to easy installation, removal, and maintenance. Choose from Enduro ABEC 3 Seals bearings or Enduro ZER Ceramic Hybrid bearings options. Both have dual silicone VV seals which will ensure a long life of service and are the lowest drag seal available on the market today. Features:Weight: 153g (Ceramic)Made in the USAFits 68-73mm width shells. Machined, anodized black aluminum cups Enduro ZER Ceramic Hybrid bearings or Enduro ABEC 3 sealed bearings Dual silicone seal keeps the contamination out for longer life Will accept current 24mm spindle cranksets (Shimano, FSA, etc. )No adapters needed | Wheels Manufacturing | Pf30 To Shimano Bb | Black | Pf30 To 24Mm, Abec-3 Std Bearing