ltem description from the seller
Length of Item:4 in Material: Primary:Carbide Steel Item Weight U/M:lbs Width of Item:1.5 in Product Type:Tools & Supplies Sold By Unit:Each Tool & Supply Types:Ring Tools Items per Pack:1 Diameter:0.25 Diameter U/M:in Grit:Fine Head Length:0.5 Head Length U/M:in Shank Diameter:0.094 Shank Diameter U/M:in