GoVets offers a wide selection of Toolholding and Tooling Systems - Rotary Toolholdi in the Machining category to help customers complete their projects. Shell Mill Holders are a type of toolholding system used to secure shell mills, which are cutting tools used to machine flat surfaces. They are designed to fit into a spindle and provide a secure hold for the shell mill, allowing it to rotate at high speeds and cut materials with precision. Shop today to find the perfect Shell Mill Holder for your project.