I don't remember using it, but the tea rust is bad, so those who are concerned will need to remove the rust. It will be shipped in simple packaging. This is the Shimano (SHIMANO) cartridge bottom bracket tool TL-UN74. This is a special tool used for installing and removing bicycle bottom brackets (BBs). It supports cartridge type BBs such as Octalink and square BBs. Use it in combination with a 32mm wrench or monkey wrench. It is a genuine Shimano tool, and its cold forging achieves high rigidity. Thank you for viewing.