This concerns the size of the head that the nut has, for screwing bolts and screws with a head of the same size.

Walnuts made of hardened metal, resistant to vibrations or impacts during work. They are suitable for demanding tasks and for use with air tools.

It features an adjustable arm that helps access hard-to-reach areas.

It has a magnet in the head socket, which helps to hold the screw or bolt.

Walnuts with a narrow design, allowing for screwing screws and bolts in hard-to-reach areas.