Material: carbon steel. Surface protection: black coating. It allows the extraction of steering cups from the frame of dimensions 1 ", 1.1 / 8" and 1.1 / 4 "or 1.1 / 4" and 1.1 / 2 ". https://uniortools.com/es/product/1681-4-botador-de-cup-de-direcci%C3%B3n#19780