The Eraser SHD system comes with a replaceable tip blade. This blade allows for only the tip to be replaced when it becomes worn, rather than the entire blade length. And as it comes in 6” lengths, in cases of uneven wear, you can replace just the worn section. The Eraser SHD system is a rugged mine duty system, designed for extremely abusive environments with an 11.25” (286 mm) polyurethane blade. This system uses our Super Eraser’s .25” (6 mm) thick, 3.5” x 3.5” (89 mm x 89 mm) tube stock steel mainframe and corrosion-resistant, powder-coated stub ends for long lasting durability.