Fixie

* 18 tooth Fixed gear Cog* 24 x 1.37 English right-hand threaded - Standard Track size.* Fits Shimano, Formula, Joy-Tech and most JIS-manufactured hubs* 1/8" size - will only work with 1/8" chains* Made of ultra-durable Chromoly steel* A no-logo product - free of corporate advertising - clean look.* Manufactured to JIS standards.* We Also have lock rings. Check our other listings.* 18T size = 75g These are super hard Cro-Mo steel cogs that were designed for everyday riding. USA SELLER - DELIVERED IN DAYS, NOT WEEKS!Shipping: USPS 1st. Class mail $4.00 additional cogs 1.00 ea. (All 50 states, territories, Puerto Rico, APO FPO, Palau) Returns are on a case-by-case basis. We accept returns for 2 reasons: Defective item, or sent the wrong item. We do NOT accept cancellations because sellers are charged for them. Purchase wisely. Ask us questions if you are unsure, we love to help.