Used to place inside sockets where the insert firmly holds the fastener in the socket and helps prevent nuts or bolts from dropping into restricted areas. Magnets are removable for use in other sockets. 9 pieces Contains magnets only for use in 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16 and 7/8″ sockets.
