Fits many different Harden applications, 4 5/8″ overall, and can be cut down. Bottom protrusion that has 2 o-rings on it has a diameter of 1/2″. Hot and cold turn opposite of each other. 16 spline, 3/8 stem diameter. Cross handle applications normally take two hot cartridges, lever handles take one hot and one cold. Made in the USA.
Lever handles for Harden can be found here.
Cross handles can be found here.
Porcelain cross handles can be found here.