Vise Swivel Base, Swivel Base, 11-3/4 in x 12-3/4 in x 7/8 in, For Use With 19F396 Milling Vise, Features Allows Positioning in 1 Degrees Increments, Base Hardened and Ground 70,000 psi Ductile Iron, Dual Lockdowns, Keyways for Proper Position On Machine, Swivels 360 Degrees