Features: *Brand new unused *Slotted taper for chatter-free deburring and countersinking *Through slot chip removal prevents chips from clogging in workpiece. *Gives best results at low cutting speeds in steel, wood and plastic and light metals. *This 4 piece Countersink and Deburring Tool Set is ideal for cutting through metal, wood and plastic quickly and easily Specifications: *Type: Countersink Drill Bit *Material: High Speed Steel *Coated: Titanium-Plated *Color: Gold *Size: 2-5 5-10 10-15 15-20 *Shank diameter: 6/8/10/12mm *Application: ideal for cutting through metal, wood and plastic *Quantity: 4pcs Package Included:: 4*Countersink Drill Bit 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.