Mayhew 89032 Features and Benefits Three most common sizes of shorter pin punches Alloy steel for hardness and durability Manufactured on a computer controlled lathe for repeatable quality and accuracy Automated, infra-red controlled heat treated tool for quality and performance Rust preventative coating applied to steel for additional protection 3-Piece Set of smaller pin punches used to drive and remove loosened pins and keys. Three most common sizes of shorter pin punches Alloy steel for hardness and durability Manufactured on a computer controlled lathe for repeatable quality and accuracy Automated, infra-red controlled heat treated tool for quality and performance Rust preventative coating applied to steel for additional protection 3-Piece Set of smaller pin punches used to drive and remove loosened pins and keys.