New Magrail-TL's are completely customizable. Technicians can add or remove socket studs to fit his needs and set configurations. Socket studs are round so there is no need to locate the square drive, just drop it over the round peg. To remove, just Tilt the socket and lift, tilting breaks the super strong magnetic pull.The Magrail-TL has a powerful magnetic force on both the top and bottom of the rail and will hold securely all sockets even overhead!!