SPI Precision Steel Parallels, Matched Pair, 1/2 Thick x 6 Long, 1 Height – 13-201-9

SPI Precision Steel Parallels, Matched Pair1/2" Thick x 6" Long, 1" Height High grade hardened tool steel Precision ground on all four sides Parallelism within 0.0005". Paired width is 0.001". Hardness: 50 RC Finished, packed and sold in pairs Specificatio