Features: * Excellent airtight performance, avoiding any undue leakage * Smooth surface, shock and impact resistant material * Jar and lid are both transparent, sealing between lid and jar consists of an excellent quality rubber ring * Strong jar-lid-clamp construction, guarantee the overall airtight performance * Adopting quick snap-shut coupling, enabling quick connection to the system in one swift move Ordering: Product----Cat. No. 2.5L HP Anaerobic Jar----HP025 3.5L HP Anaerobic Jar----HP035