Disc joints for grid stands,, 8 threaded holes M12, 1 set screw M12,, 1 unit(s)Disc joints for grid stands,, 8 threaded holes M12, 1 set screw M12,, Chrome plated steel. Material: steel (chrome plated). The Lenz range of grid stands consists of standardised components such as round bars and rectangular diagonals that can be connected in a wide variety of ways with ball joints and disc joints to form stable grid stand constructions. Foot plates, swivel castors and flat flange brackets are also available as options. For secure