6. Precision-formed neck for optimal robotic arm handling 1.5mL Clear Screw Neck Vial w/Write-on Spot, 9-425 Thread, 11.6*32mm . Athena 1.5mL Clear Screw Neck Vial w/Write-on Spot, 9-425 Thread, 11.6*32mm, USP type 1 . Features . 1)9mm screw vials can be used on all common autosampler . 2)Standard narrow neck design for GC and HPLC