Casing: 60 TPI Bead: Foldable Butyl wrapped bead = 2Bliss Ready Compound: GRIPTON® 27.5 x 2.1", psi 25-50, approximate weight 680g 27.5 x 2.3", psi 25-50, approximate weight 740g 27.5 x 2.6", psi 20-40, approximate weight 915g 29 x 2.1", psi 25-50, approximate weight 710g 29 x 2.3", psi 25-50, approximate weight 810g 29x2.6, psi 20- 40