Feature: *This rotary burrs milling cutters set is designed for rotary tools. *Machinable materials: cast iron, cast steel, bearing steel, high carbon steel, chrome-nickel alloy, bronze, brass and other metals or tile, marble, jade bone and other non-metal. *High efficiency, high-quality finish, long service life, good economic returns. *Easy to use, safe and reliable, can reduce labor intensity. *Mechanical parts chamfering, rounding and groove processing. *Dual Chamber is crossover lines, not easy to block the lines, more suitable for the object of relatively low density material. *Ideal for car, marine, craft carving, machinery, etc. Specification: *Type: Long Reach Double Cut Carbide Rotary Burr *Material: Carbide *Color: Silver *Shank Diameter: approx. 1/4" (6mm) *Shank Length: approx. 150MM--160mm ( 6 Inch ) *Optional model: A/ B/ C / D *Include: A: tapered cone end 8mm head B: tapered cone end 10mm head C: ball end cylinder 8mm head D: ball shape 8mm head Package Contents: 1 x Carbide Rotary Tool(depend on your choice) Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.