Shimano Dura-Ace Track TL-SR20 Lockring/Chainwhip Tool

Vintage Shimano Dura Ace tool used for removing the lockring and cog on fixed gear hubs. Solid, forged construction with a heavy-duty Izumi 1/8" chain (works on both 1/8" & 3/32" cogs). Hookspanner easily removes tough lockrings. 11-3/4" length and a hefty 5mm thick. Made in Japan.