45NRTH Gravdal Tire - 700 x 45 Tubeless Folding BLK 60 TPI 240 Concave Carbide Aluminum Studs45NRTH Gravdal Tire 700 x 45 Tubeless Folding Black 60tpi 240 Concave Carbide Aluminum Studs. Versatile and confidence inspiring the Gravdal securely navigates through harsh winter conditions with concave carbide studs for added traction in icy conditions. Siping creates a more conforming lug for added traction Specifications: Color Black Defined Color Black Flat Protection Tread and Sidewall ISO Diameter 622 Road 29" ISO Width (mm) 45 Labeled Size