Fowler 52-439-032-0, Premium Brand 1-2-3 Block Set

The Fowler 52-439-032-0 Premium ground 1-2-3 block set has a surface finish: 6-16ÃŽ" and hardness of 55-60 HRC. Accuracy of 0.0001"/1", 23 holes, 5 tapped, 18 untapped for easy clamping and set-up. Includes hex wrench and 5 mounting bolts 3/8" - 16. Includes a shop-hardened case for storage. . This product has a 1 year warranty offered by Fowler High Precision. If you experience any problem contact Fowler directly for warranty claims. Fowler, an American company, manufactures inspection and measurement instruments such as electronic indicators, calipers, bore gages and digital scales. The company founded in 1946, is headquartered in Newton, MA.