Tripeak Press-Fit Bottom Bracket For 24Mm Shimano Hollowtech Ii, And Bb386. Product Details ?Press-Fit Upgrade?Patented cup structure offers precise, solid fit to your frame. Ultimate protection from installation damage including wearing, deformation on carbon frames. ?Shell Width?Use with BB Right frames with 46mm shell width. Interchangeable between CeramicSpeed Bottom Bracket BBright Cervelo, KOGEL BEARINGS BBRight, ROTOR PressFit 30 | 4624 BBright, and more. ?Crankset Compatibility?Fits 24mm spindles, 100% compatible with SHIMANO DURA-ACE, TIAGRA, ULTEGRA, GRX, 105 HOLLOWTECH II, FSA MegaExo, ROTOR ALDHU/3D/3D24, RaceFace EXI/X-Type crankset series, etc. ?Lighter Yet Stiffer?Ceramic hybrid bearing offers 58% reduction in weight while boosts 68% of structural stiffness and 120% hardness. Ultra smooth and all quiet riding experiences accompany the seamless, consistent performance. ?Easy Install?Improved shell design allows for direct pressing against the cups without worrying about shell deformation. Complete installation under 15 minutes. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.