Rust-resistant center wire with nylon key handle and bristles.
16.5" long, 1.25" wide.
Model B276C
1. Slide brush to the bottom of the bottle.
2. Press down hard on handle to bend brush to shape.
3. Rotate by its key handle as you move brush up and down.
4. When finished, pull up and brush will straighten itself as it goes through the bottle's neck.