You can use any of this type. You use the slot with "13" written next to it. The one that BMSBattery sell is the best out of all the ones of this type that I've tried, so if anybody orders anything from them,make sure that you get the spoke key. It's only 60p. Bike Bicycle 6 Way Spoke Nipple Key Spanner Wrench Truing True Rim Tool Cycle | eBay