THE NAIL FILE IS MADE OF GLASS WHICH IS DURABLE. THE SIZE OF IT IS 5.3 INCHES X 0.4 INCHES X 0.08 INCHES. YOU CAN KEEP YOUR NAILS NICER BY THIS NAIL FILE. IT IS SUITABLE TO BE A PROMO PRODUCT OR GIFT ON SOME TRADE SHOWS. WE CAN PRINT YOUR LOGO ON IT BY SILKSCREEN. THE LOGO CAN BE IN 0.2 INCHES X 0.8 INCHES. WELCOME YOUR COLOR AND LOGO. 5.3" L X 0.4" W X 0.08" H