Item number 2340183,
This #13 drill bit is ideal for use with our hammered dulcimer/zither tuning pins, both the nickel plated and blued finish varieties. We use hammered zither tuning pins in our shop for making our Folkcraft Legend and Folkcraft Pathfinder hammered dulcimers, our psalteries, and our kanteles. This is the drill bit you'll want to use, too.
In case you were wondering, a #13 drill bit is .185" in diameter. It is a "weird" size, and probably a size that you don't have in your drill bit collection.