Stihl Grinding Wheel (140mm x 4.5mm) for .404 Chain

Professional chain grinding wheel from Stihl. These grinding wheels are made of vitrified aluminum oxide, which holds its shape fairly well, even under high heat. They will eventually lose their shape, and will need to be reshaped with a corundom grinding brick. They are designed to fit the Stihl USG and HOS chain grinders, and will aslo fit Franzen automatic chain grinders.