Sunlite Utili-T Thorn Resistant Presta Valve Tubes, 700 x 25-32 (27 x 1-1/8 x 1 1/4) Review Posted on January 19, 2019 By DuskunkTagged Cycling, Outdoor Recreation, Sports & Outdoors, Sunlite, Tubes Utili-T Thorn resistant tubes feature a 3.7mm tread side for increased puncture protection