Comparison : Item # C6500-6000-48-6, Nylon 6 FDA Natural
Item # C6500-6000-48-12, Nylon 6 FDA Natural
Item # C6500-6000-48-24, Nylon 6 FDA Natural
Item # 6500-600048120, Nylon 6 FDA Natural
Item # C6525-6000-48-12, Nylon 6 Black