OEM Tops bi-weekly time clock cards, designed for use with machines that register 23 hours in 10ths or 100ths. These cards record time in and out, calculating regular hours, extra hours, deductions, gross pay, and net pay. Made from extra-heavy 143 lb. stock, they are printed on both sides for durability. Each card measures 9 inches in length and 3.50 inches in width, with 500 cards included per box.