sheet metal grip light c clamp better toughess G clamp because of its welded 2 ... 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 clamp