More races are won on tubulars than clinchers. More races are won on Vittoria tubulars than any other brand. So more races are won on tires affixed with Mastik One than any other glue (or tape) out there. It's what the pros use when it matters, i.e. as they skid at suicidal speeds through Alpine hairpins in the torrid French heat in July. One tube is 30g. Enough to glue one or two tires, depending on your gluing habits.