Description It provides excellent and easy access to difficult areas. Our hand-held conical diamond files are precisely manufactured with the highest quality diamond and give polishers easy access in difficult areas, such as rods and grooves. They also provide an excellent Diamond cone files -400 Shape: Inclined plane Thickness: 0.3 ~ 1.5mm Width: 2mm, 4mm, 6mm, 8mm (3 pieces of each width) Grain size: 150 #, 200 #, 400 # (4 pieces of each grain size) Length: 180mm Effective bits: 50mm colour:silver Material:Diamond Package Contents: 12 x mechanical file Only the above package content, other products are not included. Note: Light 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.