<ul><li>Sockets are made from heat-treated alloy steel for extreme torque applications</li><br /><li>Black oxide coated to resist corrosion for longer socket life</li><br /><li>High strength 6-point drive sockets for extreme torque applications</li><br /><li>Sockets are ideal for use with impact drivers, impact wrenches and ratchets</li><br /><li>Includes 3/16