The Maclean Senior J1070 cable messenger hanger is hot formed from 1/2" x 2" open hearth steel with a specially curved groove which permits its use on corners as well as on straight runs. Two 1/2" high carbon steel track bolts clamp the strand.
Mounting holes are 9/16" and 11/16" in diameter for a 1/2" lag screw and 5/8" through bolt.