Set of special long 12-point sockets with magnet and ball end. Allows you to work in hard-to-reach places. The ball end allows you to turn at an angle. A strong magnet holds the bolt in place. Can also be installed from top to bottom in a narrow place. Where the bolt cannot otherwise be installed. The unscrewed bolt remains on the magnet. which prevents the bolt from falling into hard-to-reach places. Key length 123.5 mm. Screw adapter 3/8" with pin hole. XZN: M4/M5/M6/M8/M10.