Tubular Tire Tufo Primus 33SG Cross black 28 "* 33mmPerfect for most conditions but not deep mud.Its low weight creates good resistance against floors.Maximum pressure; 4.5 bar (65 psi)Weight: 400gTpi: 60/90 Tubular Tire Tufo Primus 33SG Cross black 28 "* 33mmPerfect for most conditions but not deep mud. It features a unique self-cleaning tread pattern with side studs providing correct traction and constant curves.Its low weight creates good resistance against floors.It is made of Black carbon rubber, offering these tires exceptional mileage, resistance to damage and the correct grip on wet or dry pavement. The support tire structure of this line has been strengthened, improving puncture resistance.Maximum pressure; 4.5 bar (65 psi)Weight: 400gTpi: 60/90