Vavert 700c inner tube high performance 100 butyl inner tube perfect for all 700c road or cross tyres quality construction with a high pressure presta valve and available in three length options 40 60 and 80mm choose the length of valve depending on the depth of your wheel rims if in doubt go long in a range of widths the four width range sizes in the 40mm valve option will cover every 700c tyre size the width you require should be marked on the side of your tyres next day and tracked