By using this adapter, you can use BSA threaded type BBs on the frame of the PF30. Bearing: Standard Bearing. Compatible Frame Standards: PF30 (φ46 x 68 mm). Bottom Blanket: BSA. Compatible Crank Standards: Shimano Hollow-Tech II, Thrum GXP. Product color and size may differ from the actual product depending on your display type. Product specifications, logo design, etc. may be subject to change for product improvement. We also cannot answer measurements or personal fit that the manufacturer does not announce. Please be aware of