10 different shapes: flat, Round, Tapered Round, Half Round, Barrette, Crossing, Knife, Flat, Warding, Square, and Triangle, can be used for different jobs. Each diamond file is made of high alloy metal steel, which guarantees the life and strength of the steel file. Suitable for very small and delicate work, you can polish the details of the items and you can use it to polish the seams of the items. This durable set of high alloy metal steel files offers a good range for DIY and professional use of wood and metal. We are professional and responsible sellers, the pursuit of customer satisfaction is our service purpose, if you are not satisfied with our products, you will get a full refund.