Park Tool SW-14. 5 Spoke Wrench For Shimano Park Tool's two-sided SW-14. 5 Spoke Wrench features 4. 4mm and 3. 75mm openings to fit Shimano(R) Wheel System nipples. The 4. 4mm nipples are found at the hub, and the 3. 75mm are found at the rim. The wrench is approximately 125mm long. Features Tip Size: 4. 4mm/3. 75mm Related Articles: WHEEL AND RIM TRUING Manufacturer's Part No: SW-14. 5 UPC: 763477007445 | Park Tool | Sw-14. 5 Spoke Wrench Sw-14. 5, For Shimano Wheel Systems