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the tools you see in the picture comprise of a set of six, 3 of each. The openers have a flat end and the closers a slighty concave end. They are put into the setting so that the jaws are just touching the bras rim around the jewel and then you start twisting them and every now and again open them up a little more to help push the brass back away from the jewel. The closers work in the opposite way. You are right Tmac, pictures would help!