#11-16 Antique tools for use on pool table cabinet bolts. Used by traveling table mechanics in the 1800s and early 1900s. Cast iron "elbow wrenches" (left and right) fit bolts with square, tapered heads. Very rare premium version of the same wrench (top) has walnut handle and also fits square head pocket bolts. Cast iron adapters (center) fit square head cabinet bolts and rail bolts and are used with carpenter's brace.