Comparison : Item # C6500-1500-48-1.5, Nylon 6 FDA Natural
Item # C6500-1500-48-2, Nylon 6 FDA Natural
Item # C6500-1500-48-2.5, Nylon 6 FDA Natural
Item # C6500-1500-48-3, Nylon 6 FDA Natural
Item # C6500-1500-48-3.5, Nylon 6 FDA Natural