Vial Kit, Screw 2ML 8mm Cap w/ Bonded PTFE/Sil Septa, 100/pkg. Price: $27.26. Vial Kit, Screw 2ML 9mm WM Grad Mark Spot Blue Cap w/ Bonded PTFE/Sil Septa, 100/pkg. Price: $31.14. Vial Kit, Screw 300µL 9mm Grad Mark Spot Blue Ribbed Cap w/ PTFE/Sil Septa, 100/pkg. Price: $88.76.