Blendtec 40-630-60 90 Oz WildSide Jar with Vented Gripper LidThe FourSide Jar's square shape and patented single prong wingtip blade create a better blending vortex to micronize ingredients. This smaller jar is perfect for eateries that sell lower volumes of blended product. 4 sided design forces ingredients back into the blade. Faster speed of service. No plunger needed to move ingredients around. Lightweight material for easy lifting and pouring. 3 corners for simple pouring at multiple angles. Easy to read