The Shaft-M8 Pad is the only shaft conditioning system of it's kind. Measuring 3" x 4" it is the largest shaft conditioner on the market today. Made from the same space age material originally designed to polish the Plexiglas canopy of military aircraft. It has 2400 grit on one side and 3200 grit on the other with a padded foam core to give you a better grip. Grit is woven into the cloth material so it will not wear out. So fine you can use it as much as you like without damaging or reducing the shaft diameter. Simply wash in water and use it over and over!