Description:

Material: Rubber
Color: White
Designed in tapered shape with standard demension, easy to plug in or pull out, creating an airtight seal in the mouth of your carboy or fermenter
Smooth and tapered sides designed for exceptional sealing and optimal fit with a wide range of openings
Well made with sturdy rubber stoppers to provide the best primary and fermenter arrangements possible, for laboratory, household, and industrial use

Size Chart:

Top Diameter: 17mm / 0.67inch; Bottom Diameter: 12mm / 0.47inch; Length: 30mm / 1.18inch;For 15mm Flask Test Tubes
Top Diameter: 22mm / 0.87inch; Bottom Diameter: 17mm / 0.67inch; Length: 35mm / 1.38inch;For 20mm Flask Test Tubes

Package Includes:

10 Pieces Test Tube Rubber Stopper 17mm
10 Pieces Test Tube Rubber Stopper 22mm

Note:

Please allow 1-3mm error due to manual measurement, make sure that you do not mind before you bid.
Due to the different monitor and light effect, the actual color may be slightly different from the picture color.