The size of the connection points available in the extension. On one end, it connects to a chestnut, a snap hook, or an air tool, and on the other end, it accepts a nut with a corresponding size socket.

Made of hardened metal, resistant to vibrations or impacts during work. It is suitable for demanding tasks and for use with air tools.

It has an adjustable arm, which allows for the adjustment of the direction angle and access to hard-to-reach work areas.