PF3024 Compatible Frame Standards: PF30, Compatible Crank: SHIMANO HOLLOWTECH 2 / SRAM GXP Compatible Frame Examples: RIDLEY, FOCUS, JAMIS, etc. Compatible BB Size: Inner Diameter: 1.8 inches (46 mm) / Shell Width: 2.7 inches (68 mm) Bearing Material: NRS Coating G5 Ceramic Body Material: 6061 T6. FULL CNC-MACHINED Weight: 4.06. SHBONE WREN. Use products for CH-005 or SHIMANO HOLOOWTECH2 Product color and size: The color of the product may look different from the actual product depending on your display settings. 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