This 4" Industrial Bench Vise by Bessey is guaranteed unbreakable for dependability and long service life. Moveable jaw, stationary jaw and base constructed with 90,000 PSI drop forged alloy steel for top performance. It has a perfect parallel jaw design for secure clamping, precision ground and induction hardened jaws and anvil for dependability and long life. Comes with a long length alloy steel spindle handle for fast, high force clamping and long length alloy steel swivel base locking handles (2) for fast, easy, high force clamping of swivel base. The 360 degree rotation drop forged alloy steel swivel base provides versatility for the positioning of parts. Made in Europe to quality standards ISO14001, ISO9001, Q1, TUV SUED /GS.