20 Pcs 12x40mm Clear Mini Vial Glass Bottles Glass Jar with Environmental Quality Corks/capsule and Eyescrews--vol 2.3ml Size: 12.0x40.0mm (check the pictures), the size of the inner opening is 7.3mm Color: Clear Weight: Approx 2.6g Pack includes 20pcs of glass bottles, 20 environmental quality corks/capsule and 20 eyescrews Vol:2.3ml