Jack Richeson 891035 Center Notched Cross Brace for Best Heavy Duty Stretcher Bar, 60" Made in USA, by wisconsin craftsmen, for the finest artists in America Pine braces help keep your frame straight and square Lengths from 8-inch to 144-inch SOLD SEPARATELY, Jack Richeson's BEST Cross Brace Brackets, one pack of 2 REQUIRED per brace We recommend cross braces for stretcher bars over 36-inch in length