50x FOUR PRONGED T NUTS CAPTIVE THREADED INSERTS FOR WOOD FURNITURE M6 M6*9mm
50X JACK NUTS THREADED INSERT SCREW ANCHORS M4 M5 M6 M8 BLIND SPIDER NUT RIV NUT. They are designed for use when woodworking, providing a threaded insert once fitted. The design incorporates four teeth or prongs for biting into the workpiece.