THE VERY BEST. Does not catch when the needle is withdrawn. After threading the button, the end of the needle is loaded with a clasp. As the needle reaches maximum depth, the clasp is ejected. Saves time and labor. No need to remove the outside back of the piece being tufted. A splendid tool for the true craftsperson. Working Process: 1.- At the start, assemble on the thread the corresponding quantity of clasps for the required number of stitches. clasp with thread in the hollow of the needle. 2.- Push the needle (with ed clasps and thread) through upholstery fabric, and press the head of a needle. The clasp with thread will be ejected. 3.- Pull the needle out and tighten the thread, the clasp will be anchored inside. How to care for CS Osborne Tools