45NRTH Gravdal Tire - 700 x 45, Tubeless, Folding, Black, 60 TPI, 240 Concave Carbide Aluminum StudsVersatile and confidence inspiring, the Gravdal securely navigates through harsh winter conditions with concave carbide studs for added traction in icy conditions. 240 concave carbide aluminum studs provide traction in the iciest conditions Reflective strip on sidewall makes you more visible when riding in low light conditions Fits most bikes with cantilever or disc brakes Tubeless ready 60 tpi We design 45NRTH tires for extreme winter cycling