The RackGold Slide-on Cage nuts, or clip-on nuts as they are sometimes referred to, slide onto tapped holes in open frame 2-post telco racks, and 4-post server equipment racks, giving you various threading options such as 12-24, 10-32, M5 or M6. Most 2-post networking relay racks use 12-24 threads, while Dell servers tend to use the 10-32 standard. Typically used for mounting of server equipment, rackmount shelves, switches, routers, patch panels and other networking, electronic and data equipment. What's included? Qty 25 - M6 Slide-on Cage Nuts - USA Made Mfr # GM6-SLD-B50