Partstock(TM) Multi-Color Aluminum alloy Converter Presta to Schrader Bicycle Bike Valve Adaptor Tube Pump Tools Air Compressor Adapter Tools.(Color send random) Convert a Presta Valve to a Schrader Valve. Also turn a UK Valve into a US Valve Size:Approx.0.7in x 0.4in x0.3cm. Multi-Color Presta Valve to a Schrader Valve (Colors sent at Random) Machined Anodized Colorize Ultra-light, weight only 1g per piece. Easy to used. Package includes :Partstock(TM) 5 x Bike Tube Tool.(Color send random)