Preethi Steel 3-Jar 550W Grinder with Turbo-Vent Posted by admin Stainless Steel Body & Jar. TurboVent allows cool & silent operation; Enhanced performance. Strong Newly Designed Couplers. Unique Jar-Machine locking system for extra security. Jar Configuration: 1.5 Liter Jar, 1.0 Liter Jar, 0.5L Chutney Jar.