sheet metal grip light c clamp better toughess G clamp because of its welded ... 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 could be changed as you need ... .5",3",4" sheet metal grip,g clamp,c clamp,light c clamp