Built for endurance and performance on the road the vittoria road inner tube is crafted from latex for a durable lightweight construction the racing inner tube is available in two variant sizes 19 24mm and 25 28mm and has a valve length of 51mm lr key features vittoria latex road inner tube presta 51mm two variant sizes 19 24mm or 25 28mm durable lightweight latex construction built for road performance weighs just 85g manufacturer claimed ideal for racing and sportive