Fowler 1/8" Premium Parallel Set

• Made from high-grade alloy steel, hardened and ground from 1/8" stock with 2 holes in each parallel.• 10 pairs, 6" length, 1/8" width.• 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8", 1-1/2" & 1-5/8"• Height specifications relate to consistency within each pair. Absolute heights are nominal.• Parallelism: ±.0002"• Paired in height: ±.00015"• Hardness 58-63 HRC