Features: Time cards rack for using with time card machine in office, factory, warehouse, etc. 24 slots, 1 slot for 1 card, can hold up to 24 time cards. Compatible time card size: max. 8.5cm wide, and at least 17cm long. With 2 holes at the backside for hanging it on the wall.(screws are not included.) Made of plastic material, lightweight and durable.