Aerohead Shield Replacement Donic Presta valve extensions designed to

Presta valve extensions designed to screw into Continental's tubular tyres or any regular inner tubes with a replaceable valve core

Head size: 72"

but it can also offer a 45 degree tilt which makes it easy to access your hatchback without taking your bike off the rack

which virtually eliminates drips and spills

Aerohead Shield Replacement Donic Presta valve extensions designed toThe replacement lens for your Aerohead Helmet featuring premium Optics by ZEISS and a choice of either grey (for sunny mixed conditions) or clear for low light racing and training. The magnetically fastened ZEISS optical shield provides wraparound eye protection with exceptional optical clarity, and it's easy to flip up or remove with one hand when appropriate. Always keep a spare.