Features: Adopted of high quality carbide tips, exquisite workmanship, durable in use. Easy to use, not easy to rust. Mainly used for ordinary steel and stainless steel processing. This set includes 10 pcs carbide inserts, so it provides convenience to replace the broken one. Good chemical stability, heat resistance, good wear resistance, high hardness. Specifications: Model: DCMT11T304-HM YBC251 Material: carbide Size: 19.5 * 11 * 4mm /0.77 * 0.43 * 0.16inch (1-3mm error) Color: gold Quantity: 10 PCS Blade description: D = blade shape, Diamond 55 degree C= clearance angle is 7 degrees M= blade tolerance(You can ignore it) 11= cutting edge is 11mm T3 = the blade thickness, T3=3.97mm 04=R degree of the sharp Angle of the blade, (02=R0.2, 04=R0.4, 08=R0.8) HM = Groove type of blade YBC251 = processing material (suitable for processing semi-steel) Packaging: plastic box(yellow, red, blue, random) Package Included: 10 x CNC Carbide Tips Inserts Note: Please allow 1-3mm error due to manual measurement, thanks for your understanding!