White Industries Fixed Cogs 16t 1/8″ Review Posted by Pelicandy November 3, 2018 in Drivetrain Components White Industries splined fixed gear cogs are made out of 8620 case hardened steel. The cog is designed to be used with a standard English 1.29 x 24 tpi threaded lock ring. Made in USA. Random Products Truvativ Chainring Bolts Review FSA Vero Crankset Compact Review SHIMANO FC-M171 Altus Crankset (Black, 170-mm 48/3... Wheels Manufacturing PF30 to Outboard Bottom Brack... Cycling Outdoor Recreation Parts & Components Sports & Outdoors White Industries