Secret, semi -lane and

When the area of ​​products is not enough to be glued to each other, the screws are firmly connected. A striking example of using these products is work on creating bent furniture, to connect accessories and metal elements. To make it more convenient to screw the screws, a groove is provided in the head, as it is also called — Slitz. The head of these products has three varieties: secret, semi -lane and semicircle.