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Upgraded and redesigned for Year 11, the ABS1 Pro further advances our classic Flip-Thread Chuck system. It features a 90° design for enhanced function and usability. The highly durable construction is built using machined aluminum and composite matrix materials, with an extremely robust and fluid brass swivel. The chuck quickly “flips” for Presta or Schrader valves and threads on for superior engagement. An integrated Presta valve-core wrench completes the system, providing easy valve core tightening or removal for tubeless systems.