The rubber gasket is soft, resistant to water pressure, resistant to oil, not easily torn, water leak barrier (1 pack, 8 pieces), long, waterproof, shower rubber, faucet rubber, black rubber, O-ring rubber, Oring rubber gasket, good water rubber. Waterproof rubber
4 inch parallel tires A091
Inner circle 11 mm. Outer circle 19 mm. Thickness 3 mm.
Tire size 6 inches A092
Inner circle 16 mm, outer circle 24.5, thickness 3 mm.