Challenge Wrench 4/5mm

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Our Presta Valve Extender Wrench combines a 4mm closed end for removable valve cores with a 5mm open end to install inline Challenge Presta Valve Extenders. The lightweight wrench is black anodized aluminum for durability and a precise fit. Wrench to tighten/loosen Challenge Valve ExtendersValve: PrestaPart Type: ToolsSize: 4/5mm Show more