The Leonardo Murrini Dimple Tool is actually my brass stock we use for the imprint tools. We just did not put a design on it. It is great for making the dimple to set your murrini into instead of plunging the murrini directly into the bead. You create the indent. Just heat the spot where you want the murrini, press the murri dimple tool into the bead and you have a nice hole to set your murrini/millefiori into. The tool head is 6.5mm. The handle is 5 inches long. There are many uses for this tool. Once you have your murrini in the hole, use the Leonardo mini murrini masher to press it into the hole evenly. With any tool practice makes perfect.