SET IS BOTH UPPER BLADE AND LOWER BLADE. FITS DUPLO 500T TRIMMER. HIGH SPEED STEEL, PRECISION GROUND AND POLISHED. THESE ARE FACTORY BRAND NEW MOUNTED ON ORIGINAL WOODEN BLADE MOUNTS AND NEW PACKAGING. DUPLO TRIMMER IN PICTURES IS NOT INCLUDED. PICTURE IS FOR IDENTIFICATION PURPOSES. DO YOU NEED PARTS FOR YOUR DUPLO EQUIPMENT? WE STOCK PARTS FOR DUPLO SYSTEMS 4,000, 5000, 600i, 6000, DC10000S AND OLDER BOOKLETMAKERS.