DT SWISS SPOKEY PRO NIPPLE WRENCHPROFESSIONAL TOOLSSome wheels will require truing with regular use. The way you true a wheel requires a spoke nipple wrench. The DT Swiss Spokey Pro Nipple Wrench is a professional tool that is designed for a precise fit. This ensures you don't round the nipples. The tool fits 3. 25mm square nipples. Features Precision fit to prevent nipple rounding Designed to fit 3. 25mm square nipples Manufacturer's part number: TTSXXXXR05664S | Dt Swiss | Spokey Pro Nipple Wrench Pro Version