You can either pick one up from the Consignment for Gold, or buy it out of the AP shop if you have real money to spend. These tools don't drop from monsters or bosses, they only come from the AP shop.
To graft: Take the armor you want the stats from and put it in the top slot. Take the armor you want the looks from and put it in the bottom. The tool you use is based on the quality of the item in the top slot (in this case, we only need rare tools since we have no uniques).
I don't think you can graft magic gears, but there's no real reason to since the stats aren't that great