THE VERY BEST. Does not catch when needle is withdrawn. After threading button, end of needle is loaded with clasp. As needle reaches maximum depth, clasp is ejected. Saves time and labor. No need to remove the outside back of piece being tufted. A splendid tool to the true craft person. 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 needle (with ed clasps and thread) through upholstery fabric, press head of needle. Clasp with thread will be ejected. 3.- Pull needle out and tighten thread, clasp will be anchored inside. Instructions included. Clasps (Item #TLS418, #TLS418-1, and #TLS418-5) are sold separately.