Compatible: Pyramid Time Systems model 42415MB are authorized Time cards , which is Specifically Designed Pyramid model 2500, 2500K1, 2600 and 2650 Time Clock. Each package contains 1000 time cards. Product Specification: These Authorized Time Cards are compatible with Pyramid Aligning time clocks. Each card measures 3.38 inches wide X 7.44 inches long, making them compact and easy to handle and is printed on 110# card stock. Features: The time cards feature a double-sided 6-column layout that records 3 in and out punches, Employees Name, Numbers, pay period, actual pay, deductions, and OT Hours. The front side has 1-15 days (Side A) and the back has 16-30 days (Side B). Durability: It is made from 110# card stock with 30% post-consumer recycled content, ensuring durability the cards can withstand regular handling and are designed to fit smoothly into the compatible time clocks without jamming and functionality. Data Management: The Double-Sided Time sheets records data fields for number, period, name, hours and tax with accurate time tracking. Employees can efficiently log their time in the front and back columns for their various shifts and schedules.