ROHN Guy Ring and Clamp Assembly for up to 1-3/4" Antenna Masts - 1.75" ROHN 1-3/4" Guy Ring & Mast Clamp Assembly (1) 1.75" Guy Ring (ROHN Part Number GR3) / (1) 1.75" Mast Clamp & Bolt Assembly (ROHN Part Number C3A) Attaches guy wire to your antenna mast up to 1-3/4" OD Genuine ROHN Hardware. OEM Factory Hardware. Pre-Galvanized Steel. Installation Instructions: Slip ROHN clamp assembly and ROHN guy ring over the antenna mast. Tighten bolt on clamp assembly to fasten to your mast. Guy ring will rest on top of clamp assembly. Attach 3-4 guy wires from different angles from your ROHN guy ring to support structure and remove any slack from each wire. Adjust guy wires until antenna mast is vertical. Guy wire ring should rotate freely on the mast for easy manipulation.