This is a Remington Patch known as the Rem-Oil, model 18411.
For more than 200 years" Remington products have set the performance standard all others must follow. Remington innovation is always ahead of its time" as evidenced by their rich history and long line of high quality products.
Features:
Removes Dirt and Grime
Protects Metal Parts from Rust and Corrosion
Long-Lasting Film
Reduces Metal-to-Metal Wear