Product Description Probem Solvers Hex Crank Arm Fixing Bolt/Cap Description: Problem Solvers is the go-to 8mm crank arm bolt for a wide variety of crank sets. Sold as a pair. Substitutes: CR2194 Problem Solvers Hex Crank Arm Fixing Bolt/Cap (8mm) (2) at Dan's Comp $7.99 Buy Now Check Price on Amazon Check Price on eBay