The Topeak Twinhead DX Upgrade Kit. Upgrade any existing pump to the TwinHead™ DX pump head. Twinhead™ DX uses a full metal construction with separate connectors for Presta and Schrader for quickly attaching to any valve. Also features a built in pressure release button. Topeak Twinhead DX Upgrade Kit Features Includes extra long hose and mounting hardware More info
