The QEP 30 in. Pro Spiral Mixing Paddle is specially designed for the fast and effective mixing of all types of setting and grouting substances, including thick and dense thinset, adhesives and grout. The large 5.5 in. spiral head mixes product from the bottom up to prevent air bubbles, which can lead to installation issues. The convenient 30 in. length offers more leverage and comfort than standard mixing paddles.