A simple and effective short run jig for parallel, square or hex shapes as well as for cross hole drilling at 60, 90 or 120°. Made of hardened tool steel. Overall dimensions: 1-3/4 in x 1-3/4 in x 3 in long. Ground to 0.005 in flatness, squareness and parallelism. Capacity 1/16 in through 1-1/8 in. Standard nut closer and cam operated, quick-acting closer can be used on both the square and hex blocks.