Shimano TL-SR22 Chainwhip$68
Shimano TL-SR22 Chain Whip Tool
The Shimano TL-SR22 is hands down the best multi-purpose tool for installing/removing lockrings and cogs on track hubs!
Hefty 5mm thick solid steel construction with a comfortable rubber grip and heavy-duty Izumi 1/8" chain (works on both 1/8" & 3/32" cogs) to wrap around your cog. Single hook spanner easily removes tough lockrings.