The FourSide jar’s square shape blends much better than traditional round jars. No tamper/plunger needed. Professional-grade jar is compatible with all Blendtec blender models (not compatible with Blendtec mix n’ Blend models). The jar also generates more friction, heating soups and hot drinks quickly and easily. It’s also especially good for grinding grains and making smaller quantities. Blendtec 32-oz Clear Blender | 40-609-50
