Features: *Brand new and top quality. *Chamfering tool is the best alternative to traditional bore chamfer, characterized by high precision and low roughness of the machined, strong applicability widely used for high and low level of each class processing equipment. *Scope: Mechanical workpiece, Aviation, War industry, Electric valve, Cylinder, ect. Specifications: *Color: Gold (As Pictures Show) *Material: High Carbon Steel (suitable for lower hardness workpieces such as wood), can not be used to process sheet metal *3 diameters of imperial: 3/8''(9.53mm): shank diameter 6mm, the head 9.53mm, suitable for the hole chamfer in the range of 2MM-5MM. 1/2'(12.7mm): shank diameter 6mm, head 12.7mm, suitable for the hole chamfer in the range of 5MM-9MM. 3/4''(19mm): shank diameter 6mm, head 19mm, suitable for the hole chamfer in the range of 8MM-13MM. *Quantity:3pcs Package Included: 1*3/8" Drill Bit 1*1/2" Drill Bit 1*3/4" Drill Bit Note: 1.Transition: 1cm=10mm=0.39inch. 2. 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. 3. Please allow slight manual measurement deviation for the data.