Strengthens and conditions thread. Reduces tangling and knotting. Easy to Use! To use, lay thread over the holder, lightly holding the long side of the thread against the side of the holder. Pull the thread through a slot and across the surface of the wax. Repeat as needed to achieve an even coating. Wax: approximately 1 11/16 inch diameter, 3/8 inch high. Holder: approximately 2 inch diameter, 7/16 inch high.