4(L) X 2(H) X 1(W) Quick-Lok Aluminum Vise Jaws ~ Fits 4″ Kurt Anglock(tm) & similar precision milling machine vises. ~ Easy and quick set-ups. ~ Machinable vise jaws for drill or mill features. ~ Set of 2 jaws. ~ Hole space D is 2-1/2″ ~ Screw size E is 3/8″ ~ Hole distance F is .687. ~ Made in the USA. Fits 4″ Kurt Anglock(tm) & similar precision milling machine vises. Easy and quick set-ups. Machinable vise jaws for drill or mill features. Set of 2 jaws. Made in the USA. Hole space D is 2-1/2″ ~ Screw size E is 3/8″ ~ Hole distance F is .687.