Version: 12 V/24 V, polished aluminium octagonal nut M26 x 1 Ø 26.5 mm with opening 33.5 mm x 7.5 mm (torsion-resistant) for wall thickness up to 2 mm. Key can be removed in any position, nickel-plated, plastic-coated key grip, black. 250 W (terminal 15), Read more.