4x Acoplador de latón Allthread M10 rosca 20 mm x 13 mm conector de unión tuerca redonda
4x M10 Thread Brass Allthread Coupler, For the Repair of Electrical Sockets in Lamp Fittings and Extending Allthreads. This M10 Allthread Brass Coupler, allows you to join two M10 allthreads together to create a longer lamp fitting.