Profile Standard Splined Cog

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PROFILE CASSETTE COGS -The proprietary 10 spine center of these cogs fit only Profile Racing’s Splined Cassette Drivers. -Standard and Elite Cogs are CNC machined from heat-treated 4340 aircraft alloy steel for strength and durability. – Aluminum Cogs machined from 7075 Aluminum. Sizes:-Standard Steel Cogs: 12t, 13t, 14t, 15t, 16t, 17t, 18t -All 3/32″ width-Nickle Plated-Elite Steel Cogs: 16t, 17t, 18t-All 3/32″ width-Nickle Plated-Standard Aluminum Cogs: 13t, 14t, 15t, 16t, 17t, 18t -All 3/32″ width-Gold Anodized-SS Steel Cogs: 13t, 16t -Both 3/16″ width-Nickle Plated Weight:-Standard 16t- 54g/1.89 oz-Elite 16t- 44g/1.54 oz-Aluminum 16t- 22g/.77 oz*Aluminum Cogs are intended for riders 13 years old or younger. They will wear out much faster than CrMo cogs.* Show more