Comparison : Item # 6640-3500, 3.500" PA6 HS Blue Plate / Bar Stock
Item # C6640-3000-48-24, Nylon 6 HS Blue
Item # 6640-300048120, Nylon 6 HS Blue
Item # C6640-3000-48-3, Nylon 6 HS Blue
Item # C6640-3000-48-3.5, Nylon 6 HS Blue