Precision Machinist Parallel Jig Blocks Bar Tool Set

20 piece machinist parallel block bar tool set. Specifications and details: +/- .0002 in Parallel and height Great for milling and drilling 10 Thin matched pairs in set High quality precision ground alloy steel Measurements: 6" long x 1/8" wide or thick Two holes in each bar Increments in 1/8" from 1/2" to 1-5/8" Set includes a pair of each height: 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-3/8, 1-1/2 and 1-5/8 Blow molded storage case that keeps bars organized is included