Heavy duty steel vise, 6-inch model features with a replaceable steel serrated top jaws. 360 degree swivel base with 2 lockdown. Permanent pipe jaws and a large reinforced anvil. The vise is made with durable quality S37C carbon steel with 60,000 PSI tensile, finished with a wrinkle paint. Hardness of the vise jaw is HRC25-HRC30. The max jaw width is 6-inches, max open width is 6-inches and the throat depth is 3-inches. Color may vary