Brief outward, lively, unique, distinct. High strength and hardness. Tough and wear-resistant. Durable in use. Suitable for die block steel, wrought iron, carbon steel, alloy steel, chisel tool steel, general iron material etc. Material: high speed steel Color: silver Flute quantity: 4 flutes 4mm Size: Cutting diameter: 4mm Shank diameter:6mm Cutting Edge Length (Flute Length):11mm Length: 55mm 6mm Size: Cutting diameter: 6mm Shank diameter: 6mm Cutting Edge Length (Flute Length):13mm Length: 57mm 8mm Size: Cutting diameter: 8mm Shank diameter: 8mm Cutting Edge Length (Flute Length):19mm Length: 63mm 10mm Size: Cutting diameter: 10mm Shank diameter: 10mm Cutting Edge Length (Flute Length):22mm Length: 72mm 12mm Size: Cutting diameter: 12mm Shank diameter: 12mm Cutting Edge Length (Flute Length):26mm Length: 83mm Package Content: 5* Milling Cutter 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.