Shimano Bleed Screw & O-Ring Kit
$4.99
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Replacement bleed port screws for Ultegra & Dura-Ace STi Hydraulic Brake/Shifters. Sold as a pair (enough for a set of shifters).
Specifications
Genuine Shimano Replacement Part# Y0C698030
Compatible with Dura Ace: ST-R9170 & R9120, Ultegra: ST-R8070 & R8020
Note: Sold as 2 port screws.