Swivel mechanism under the chair

Adding such a platform to the seat design will not require significant effort or time and will provide the ability to rotate any of the models of chairs 360 degrees, that is, to get a comfortable swivel chair for the boat. One side of this swivel platform is attached with 4 screws to the seat base, and the other to the rack. The durable and reliable mechanism consists of 2 separate aluminum parts (the upper one is attached to the base of the chair, the lower one is fixed to the surface or support). The rotation is carried out using a convenient lever. Material: Aluminum; Weight: 3 kg;