The Hutchinson Python NG Tire. Features central tread with short linked knobs for low rolling resistance. -Python NG has a central tread with short linked knobs for low rolling resistance -1.5mm higher side knobs than original Python offers better grip -MRC -Medium compound specially designed to increase grip for greater control -Tire Use-Mountain -Tire Type-UST Tubeless -Tire Diameter-26" -ISO Width-58 mm -ISO Diameter-559 -Tire Bead-Folding -PSI-29 -58 PSI -Weight-875.0 g