10 MM Copper Crush Washers - Pack of 20 - Fits on 10 MM Bolt Go to amazon.com Related posts Top 10 best 10 mm bolts Feature.403" I.D. .585" O.D. .045" ThicknessCrush WasherOften used on Caliper Banjo BoltsPack of 20 Pcs. DescriptionOften used In brake systems around the flex hose to secure around the banjo bolt