I bought a flat pack wardrobe a few days ago, and two of the hidden joint fastenings are missing. I don't know that they are called (type of) but they consist of a steel post about 25mm overall length, a shank of about 12mm, a thin post with posidrive head and about 6mm of screw thread that inserts into a pre-drilled hole. it joins two bits together by locating 15mm circular lock into a similar pre-drilled hole in the piece to be joined. when turned, it pulls the two parts together firmly. wassit called and where can i buy some? any help gratefully received, e-mail would be nice.