Comparison : Item # 7351SS-03.5 (1/8"), 3.5 Millimeter (mm) Material Thickness (A) Wide Jaw Quick Link
Item # 7351SS-04 (5/32"), 4.0 Millimeter (mm) Material Thickness (A) Wide Jaw Quick Link
Item # 7351SS-05 (3/16"), 5.0 Millimeter (mm) Material Thickness (A) Wide Jaw Quick Link
Item # 7351SS-06 (1/4"), 6.0 Millimeter (mm) Material Thickness (A) Wide Jaw Quick Link