... grip light c clamp better toughess G clamp because of its welded 2 layer carbon steel body,powder coating zinc pl sheet metal grip ... light c clampmaterial:welded 2 layer carbon steel ,powder coating. Cast iron clamp is easy ... to break ,yet our G clamp works with better toughness.color ... :2",2.5",3",4" sheet metal grip,g clamp,c clamp,light c ...