The ITA - BB - XD15 Pro - DUB 29mm from Enduro Bearings is an Italian Thread-In, Ceramic-Hybrid, XD-15, Angular Contact, Bearing Bottom Bracket. It is designed for Italian-threaded framesets and SRAM DUB Cranksets. This top of the line BB bearing kit includes XD-15 Ceramic-Hybrid, ABEC-5 bearings, as well as all the necessary seals and spacers for a precise and professional installation.Enduro Bearings is proud to offer XD-15 Ceramic-Hybrid bearings, which are exclusive to their brand. These bearings are made with corrosion-proof, cryogenically treated nitrogen steel races and Grade 3 Silicon Nitride ceramic balls. This unique combination results in the ultimate high performance bearing setup. The deep-groove design raceways allow for maximum sized ceramic balls, increasing contact area and improving performance and longevity.The XD-15 bearings are also filled with Kluber NBU52 grease, which only runs better and smoother with time. This grease is highly resistant to being washed out and is engineered to stick to the balls, continuously providing lubrication. Unlike other bearings on the market, XD-15 bearings actually get better with use. As they wear-in, the balls make the races even smoother. This means that not only do XD-15 bearings provide initial advantages, but they become faster and smoother over time.To back up the quality of their products, Enduro Bearings offers an unlimited lifetime bearing and race warranty. However, please note that the special 6806/29 bearing in this kit is specifically designed for SRAM Dub cranksets. Enduro Bearings makes other kits for cranksets with 30mm spindles.For easy removal and installation of this bearing kit, Enduro Bearings recommends using the BRT-002 (EB8190) 30m x 42mm bearing tool with the BRT-016 (EB9651) DUB add-on kit. With these tools, you can quickly remove and install bearings with just a few twists of the wrist while the BB is still in the bike.Specifications:- Shell Fitment: ITA- Bearings: XD-15 Ceramic- Seal Type: LLB (Double Lip Rubber Seal)- Grease: Kluber NBU52 Grease- Axle Size: SRAM DUB 29mm- Warranty: Unlimited Lifetime- Enduro Reference Number: BKC-0819