VEVOR Electric Hoist Support Arm, 300 kg Max Load Capacity, Electric Hoist Holder Swing Arm with Pole, Steel Hoist Frame, 180° Swivel Scaffold Hoist Lifting Arm, Winch Hoist Arm for Workshop, Garage

WHAT SIZE EXPANSION BOLDS ARE REQUIRED TO SECURE THE VERTICLE POLE TO THE WALL, THE MUST BE A MINIMUM REGARLESS OF THE MATERIAL NEEDED TO SECURLEY FASTEN THIS. WHY DONR TYOU GIVE INDICATION OF THIS?