Features and high quality.Triangle-Shape Durable, wear-resistant, high hardness, high strength, good elasticity. Work on filing glass, ceramic, rock, carbide, gold, platinum, silver, etc. Include round, semicircle, square, Triangle-Shape, flat, taper, knife-type, single-sided Triangle-Shape, two small semi-circular, ellipses. Add some water can delay the loss of the use of diamond file. Enjoy your shopping time and have a good day. colour: Blue+gold Material: metal+Diamond size: 140mm Package Contents: 20x Needle File Tools Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.