PRODUCT: 16X1.75 & 12X1.75x2.25 tire and inner tube set Fits Various Stroller Models These 16X1.75 & 12.5X1.75x2.25 stroller replacement tire and inner tube sets Fit for BOB 3-Wheeler Gear Jogging Troller Models-Single and Double Stroller, Compatible with Bob Gear Revolution(PRO/Flex/SE), BOB Gear Ironman, and Stroller Strides Fitness Stroller tires. 16x1.75 & 12.5X1.75x2.25 tires also Compatible with same model bike tires. FEATURES: Tire: Block-and-strip tread pattern design for enhanced Grip Inner Tube: Self-sealing feature to prevent explosive flats Inner Tube Material: Heavy duty hock absorption thicker butyl rubber PACKAGE INCLUDED: 2*16X1.75 tires and 16X1.75/2.125 inner tubes 1*12.5X1.75/2.25(12 1/2x1.75x2 1/4) tire and inner tube 3 * valve caps