Casing: 60 TPI Bead: Foldable Butyl wrapped bead = 2Bliss Ready Compound: GRIPTON® 26 x 2.1", psi 25-50, approximate weight 530g 26 x 2.3": psi 25-50, approximate weight 570g 27.5 x 2.1": psi 25-50, approximate weight 590g 27.5 x 2.3": psi 25-50, approximate weight 630g 29 x 2.1", psi 25-50, approximate weight 600g 29 x 2.3", psi 25-50, approximate weight 640g