Our 2-1/2" Concrete Vibrator Rubber Head is designed to produce high amplitude vibrations to remove air pockets from the concrete and evenly distribute an aggregate, resulting in higher quality concrete. The Rubber Head meets DOT non-metal head requirements and prevents damage to coated rebar during consolidation. The Concrete Vibrator Rubber Head is for use with our MX FUEL™ Backpack Concrete Vibrator (MXF371-2XC) and MX FUEL™ Concrete Vibrator (MXF370-2XC) and is available in 1-7/8" and 2-1/2" sizes.