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<http://schema.org/description>
"These hand-built bearings are specially developed for off-road performance. The bearings offer extreme durability and high performance efficiency and are developed specifically for DUB 28.99mm..."
<https://www.timpanogoscyclery.com/product/ceramicspeed-pf30-bottom-bracket-for-sram-dub-mtb-389369-1.htm>