Precision-formed neck for improved autosampler handling. Fisherbrand 11 mm Autosampler Vial Crimp Caps with Septa . Fisher Scientific - Fisherbrand™'s 11 mm crimp caps with pre-assembled septa are convenient, minimize contamination from handling and are compatible with Chromacol 2.0mL Crimp Top Vial Amber Glass 11mm - 2-CVA 742