Round Mesh Chains MSR-1120 (2.0 mm – 5.0 Gr./Ft.) MSR-1130 (3.0 mm – 9.5 Gr./Ft.) MSR-1540 (4.0 mm – 16.7 Gr./Ft.) MSR-2050 (5.0 mm – 28.0 Gr./Ft.)