Features 1、Premium Material: Rotary file is made of cemented carbide material, heat resistant, high strength, not easy to deform, sturdy and durable. 2、Excellent Performance: Professional manufacturing, exquisite workmanship, high efficiency, stable performance and high reliability. 3、Size: Carbide burr with 6mm/0.24in shank, cutter head diameter is approx. 6mm/0.24in, 8mm/0.31in, 10mm/0.39in, 12mm/0.47in, 14mm/0.55in. 4、Easy Operation: Easy to use, single cut burr can be used with handheld electric or pneumatic tool drive, more convenient and practical. 5、Wide Application: Carbide burr set is suitable for surface grinding of aviation, automobile and ship, has a wide range of application. Specifications: Item Type: Carbide Burrs Set Material: Cemented Carbide Color: Silver Kits include A0616M06, A0820M06, A1020M06, A1225M06, A1425M06 A0616M06: Shank diameter is approx. 6mm/0.24in, cutter head diameter is approx. 6mm/0.24in A0820M06: Shank diameter is approx. 6mm/0.24in, cutter head diameter is approx. 8mm/0.31in A1020M06: Shank diameter is approx. 6mm/0.24in, cutter head diameter is approx. 10mm/0.39in A1225M06: Shank diameter is approx. 6mm/0.24in, cutter head diameter is approx. 12mm/0.47in A1425M06: Shank diameter is approx. 6mm/0.24in, cutter head diameter is approx. 14mm/0.55in Application: Suitable for surface grinding of aviation, automobile and ship, etc. Package List 1 x Carbide Burrs Set(5pcs)