RISK Bicycle Valve Core Removal Tool for Schrader Presta Extender Bike Tube Tire Valve Tool Not all presta valve cores are removable. Hexagon shape provides firm grip and easy use. Small valve tool designed to remove and install Schrader/Presta valve cores and Presta valve extenders. machined from aluminum alloy and anodized blue for a long-lasting finish. This valve tool is specially designed to remove and install Schrader/Presta valve cores and Presta valve extenders. It is lightweight, small and portable, perfect tool for your bike. Specifications: Package Weight: 21g / 0.7oz Size: 54 * 11 * 10mm / 2.1 * 0.4 * 0.4in Material: Aluminum alloy Weight: 8.5g / 0.3oz For: Schrader / presta / presta extender / tube tire valve tools Package Size: 140 * 88 * 20mm / 5.5 * 3.5 * 0.8in Package List: 1 * Valve Tool