Olson coping saw blade set - 4-pack assortment pack coping saw blades. 6-1/2" Long between pins to fit all standard frames. Includes 1 each: fine, medium, coarse, and metal cutting blade. Made from the finickiest hardened and tempered spring or high-carbon steel with precision punched or milled teeth for accurate sawing, smooth finishes, and long life. - blade length: 6-1/2 in., teeth per inch: 10, 15 & 18 TPI, Pkg Qty: 4, Package Type: Card