Pyramid 4000R Genuine Replacement Ribbon for 3500, 3700, 4000, 4000HD Time Clocks, lasts 60% longer than compatible replacement ribbon Genuine Pyramid replacement ribbon for 3500, 3700, 4000 & 4000HD Time Clocks Use only genuine Pyramid replacement ribbon for optimum time clock performance and full warranty protection Jet black ink Airtight seal prevents ink from leaking or drying out Includes installation instructions 9.84ft. ribbon length Lasts 60% longer than compatible replacement ribbons Made in USA