wide opening, label + filling lines 0.1ml micro-Insert, 31 x 6mm, clear glass, 15mm top SILANIZED: 06 09 1240 0.1ml micro-Insert, 31 x 6mm, clear glass, 12mm top 0.1ml micro-Insert, 29 x 5.7mm, clear glass, with assembled plastic spring SILANIZED: 06 09