Whip up nut butters, hummus, and other tough-to-blend foods with the powerfully engineered Blendtec Twister Jar. Specially designed for ultra-thick recipes, this blender attachment features a sturdy stainless steal wingtip blade and a twister lid that you turn during blending to keep ingredients off the sides. Includes twister lid and BPA-free jar with markings for up to 16 oz. For use with Blendtec Blenders, sold separately. Color: Clear. Gender: unisex.