4/6/2014 · Crimp Snap Combination Kit – Vial 2ml Amber Glass, 12x32mm with write-on patch | 11mm diameter snap, yellow polyethylene caps | 1000 pack. £ 234.00. Autosampler Vial Caps. Crimp Snap Combination Kit – Vial 2ml Amber Glass, 12x32mm with write-on patch | 11mm diameter snap, green polyethylene caps | 1000 pack. £ 240.00.