This clear cartomizer holds 1.6ml of juice,is rated at 2.5 to 2.9 ohms. Tough crack resistant tube.  The drip tip that is included screws on and has a plug and seal making it spill resistant. It can be dripped into to fill but a syringe is easier. Drip or insert syringe along side of tube. Do not put juice in the middle hole. 510 to ego adapter needed if used on the mods. Price is for one.