Made in the USA, LBNO Standard Type Closed Spelter Sockets illustrate perfectly the principle of all LBNO wire rope fittings. THey are designed to fit the rope properly and to develop the full strength of the wire rope. LBNO socks have grooves in the socket basket for superior strength and holding power when pouring with zinc. LBNO sockets comply with both Federal and International Stands to all for use with resin pour.