The Grout Sealer Wand easily applies the proper amount ofgrout sealer in one application with professional results. Don"t hurt your knees and your back! This grout wand is perfect for sealing grout lines without the pain. Just push down and the sealer is applied, let up and the flow of sealer stops. Chemical resistant o-rings withstand solvent based chemical grout sealers. • Easily Apply Grout Sealer Like A Professional! • Flow Stops as Soon As You Lift Up From the Grout Line Save Your Back and Knees!