Teravail&';s Thorn Resistant tubes feature 4mm thick butyl rubber in the tread area tapering to 2mm sidewalls. Dealers can expect to receive mixed packaging for a period of time as the Q-Tubes brand is phased out and replaced by Teravail tubes. In all cases Teravail tubes will serve the same functional range as their predecessors at a minimum. In some cases Teravail tubes may serve a broader functional range. 4.0mm wall thickness Removable Schrader valve core Teravail Thorn Resistant packaging features environmentally friendly soy ink printing on recycled cardboard Master Cartons of Teravail Thorn Resistant tubes contain twenty individually boxed tubes