HHIP 3900-3009 Parallel Set, 9 Pair, 1/4" x 1-3/4" x 6"

1/4 X 1-3/4 X 6" Parallel Set with 9 Pairs ~ Made from fine quality tool steel that has been stress relieved against distortion.~ Precision ground and hardened. ~ These precision parallels are recommended for layout work, standards and set-up. ~ The holes are designed for easier handling and set-ups. ~ Case hardened RC 55 to 62 on 2 sides, top and bottom only. ~ Tolerance is Parallel to 0.0003 on 2 sides, top and bottom. ~ The dimensions are witching 0.001" allowance. ~ Complete with fitted durable plastic case. ~ Sizes included are 1/4 x 3/4 x 6", 1/4 x 7/8 x 6", 1/4 x 1 x 6", 1/4 x 1-1/8 x 6", 1/4 x 1-1/4 x 6", 1/4 x 1-3/8 x 6", 1/4 x 1-1/2 x 6", 1/4 x 1-5/8 x 6", 1/4 x 1-3/4 x 6".