Plastic Bottles , 30ml/1 oz Liquid , Red 20PC 3mmX4mm Extend and change the direction

Extend and change the direction your current existing E27 Screw mount fixture

which made them hardly noticeable and prevents shelf wobble

Not just for test tubes

Fit for 15 to 18mm test tubes

1 x Barbed Elbow Hose Fitting

Plastic Bottles , 30ml/1 oz Liquid , Red 20PC 3mmX4mm Extend and change the directionSpecifications: Capacity: 30ml 1 oz Material: PE (Polyethylene) Color: Red Diameter: 31mm Total Height: 71mm Package Content: 20 x Plastic Dropper Bottles Applications: Designed for travel and can be used to dispense and store most liquids. Great for solvents, light oils, glue, paint, essence, saline, alcoholetc. Dropper can be well controlled liquid dripping, the small needle tip can control the flow of liquid easily, can be removable when you do not