SRAM Bottom Bracket Spacer Kit DUB MTB/Road V3Spacing Out Sometimes your chainring doesn't match up perfectly with your cassette, so you need to space it out to get the proper chain line. The SRAM Bottom Bracket Spacer Kit DUB MTB/Road V3 is designed to work with SRAM DUB BB30, BSA, PF, PF30, and T47 bottom brackets. It comes with 2. 0, 4. 5, 5, 6. 0, 6. 5, 7. 5, 8. 5, 9. 0, and 10. 5mm and two pieces of 2. 5, 3. 0, 5. 5mm, and two standard BSA 68 AL spacers. Features Compatible with SRAM DUB BB30, BSA, PF, PF30, and T47 bottom brackets Spacers included: 2. 0, 4. 5, 5, 6. 0, 6. 5, 7. 5, 8. 5, 9. 0, and 10. 5mm and two pieces of 2. 5, 3. 0, 5. 5mm, and two standard BSA 68 AL spacers SRAM Part Number: 11. 6418. 002. 002 | Sram | Bottom Bracket Spacer Kit Dub Mtb/road V3 Kit With 2 Standard Bsa 68 Al Spacers