Feedback Sports tools are designed specifically for the needs of professional bike mechanics. Attention to detail and highest quality materials and construction make for the ultimate level of performance and durability. Features: 3.23mm (0.127") 3.3mm (0.130") 3.45mm (0.136") Valve extender wrench CNC machined Limited lifetime warranty Specifications: Weight: .1 lbs Dimensions: 4 x 2.5 x 1 in