Furnished with 9/16" holes for crossarm mounting,Hot dip galvanized BRACES, CROSSARM, "V"Furnished with 9/16" holes for crossarm mounting. 11/16" holes for polemounting. The “1” series has a 9/16" x 1" slot in place of the 9/16" diametercrossarm mounting holes. Hot dip galvanized . angle cross arm brases