For Sale Antenna Plates Boom to Elements ¼” x 4” x 6”  For: 1.5" boom and 1/2” element. Includes: 0.25 x  4" x 6" plates with hole 2 x Clamping U-Bolt with Saddle Sets, Zinc Plated Steel 5/16 Thread for 1.5” OD and 2 x Polypropylene Clamps Cushions for 1/2” OD element. Polypropylene Clamps are fix and insulate element from the plate comes with   ¼ x 2” zinc plated bolts and nuts. This Boom Plates keep your Yagi elements stable, insulated and properly secured on the boom.

from 7/15/21. 
2" is available...