Fitment： For Set-Up, Layout And Inspection Jobs Description： -Has 11 Holes With 5 Holes Tap To 5/16"-18 Threads For Clamping And Others Are Untapped Holes -Made Of Hardened Tool Steel And Precision Ground On All Six Sides -Size Within +/- .0002" -Flatness And Parallelism Within .0002" -Squareness On All Sides Is 0.0003" Per Inch -Pairs Are Matched To A Tolerance Of 0.0002" Package Include： 1*Parallel Blocks Steel W/o Product Instruction Notes： -If You Are Not Sure The Item 100% Fit For Your Vehicle Before Your Purchase. .
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