2 pieces pack. 1" diameter by 1" long special made brass nuts, and 1/2" diameter by 6" long screw. 1" forstner bit is required. 500 g each set.
These nuts are a traditional way of joining a bed's side-rail to the leg. The nut is set into the rail and a bolt passed through the leg, into the end of the rail and into the nut. Generally the only other addition to the joint is a short dowel to maintain alignment. This method forms a very strong and neat joint that can be re-tightened at any time to take into account seasonal movement of the timber or the joint. At the same time it is easy to dismantle when moving house for example. This method is equally effective for joining the rails of a workbench to its legs.