The zinc-plated trik bolt is a complementary piece for the installation of the zinc-plated closed trik coupling, this piece is designed so that its two ends generate support for the shelf. The part of the M8 lathe is embedded in the sidewall of the shelf and the other end traverses a horizontal portion of the shelf to engage the hitch. The middle part of the lathe has a diameter of 8.5mm, the end that fits into the wall of the shelf is 11mm long, and in total it is 59mm long. It is made of steel to support the weight without twisting and generate greater support, it has a zinc-plated finish. Each package contains a total of 500 units.