Precise 1/32″ Thick x 6″ Long 20 Pair Ultra Thin Parallel Set – 3900-3032

• Parallelism is .0001″.
• Paired .0001″ in height.
• Hardness is RC 50~55.
• Made from fine quality tool steel that has been stress relieved against distortion.
• Parallels are also precision ground, hardened and blue finished.
• Sizes included are one each of 1/2, 9/16, 5/8, 11/16, 3/4,13/16,7 /8, 15/16, 1, 1-1/16, 1-1/8, 1-3/16, 1-1/4, 1-5/16, 1-3/8, 1-7/16, 1-1/2, 1-9/16, 1-5/8, and 1-11/16″.