The BSA - Bearing Kit - A/C 440C Stainless Steel - 24mm, manufactured by Enduro Bearings, is a high-quality product designed for Shimano 24mm External Cup BBs. This kit includes two 440C stainless steel, angular-contact bearings, as well as all the necessary seals and spacers for a precise and professional installation. The use of 440C stainless steel in the balls and races ensures a long lifespan and superior corrosion resistance, making it ideal for challenging conditions and environments. While stainless steel has a slightly lower load capacity and is softer than the standard 52100 chromium steel used in most bearings, it is a great alternative for wet conditions, regular bike washing, and areas where sweat can be an issue. To enhance water resistance, Enduro Bearings has equipped these bearings with LLB type seals and CRC Marine Grease. Additionally, all Enduro stainless bearings come with a full two-year anti-corrosion warranty. For a convenient installation and removal of this bearing kit, we recommend using the BRT-003 (EB9040) 24mm x 37mm bearing tool. This tool allows for quick and effortless bearing changes while the bottom bracket is still attached to the bike. Enduro Bearings offers a wide range of options, including high-carbon chromium steel, ceramic-hybrid, and XD-15 with ceramic or stainless balls. All bearings are designed with deep groove races to accommodate large balls, and feature dual-lip seals for ultimate protection against the elements. Shell Fitment: BSA Bearings: 440C Stainless Steel Seal Type: LLB Grease: Kluber CRC Marine Grease Axle Size: 24mm Warranty: 2 years Enduro Reference Number: BKS-54102'