12 screw Enclosed Busbar. 12 x 4mm screws + 4 x 6mm studs. Rating: 100Amps. Material: Nickel plated brass, stainless steel studs and screws. The bridge can be removed to leave 2 x 6 way. Busbar supplied with glass fibre reinforced box. Each box features 6 removable windows in the cover for easy cable entry and exit. Box dimensions: 45mm H x 138mm W x 69mm D