Diamond Cut Curb Chains DC-30 (1.2 mm – 1.4 Gr./Ft.) DC-35 (1.4 mm – 1.8 Gr./Ft.) DC-40 (1.6 mm – 2.4 Gr./Ft.) DC-50 (1.8 mm -3.1.Gr./Ft.) DC-60 (2.2mm -5.Gr./Ft.) DC-70 (2.5 mm – 5.8 Gr./Ft.) DC-80 (2.7 mm – 7.4 Gr./Ft.) DC-100 (3.6 mm – 11.8 Gr./Ft.)