Specifications: Smallest Drill Bit Size:-1 mm Largest Drill Bit Size:-13 mm Increments:-0.5 mm Material:-High Speed Steel Finish/Coating:-Uncoated Number of Pieces:-25 Parabolic Flutes:-No Coolant Delivery:-External Drill Bit Size:-2 mm, 2.5 mm, 1 mm, 12 mm, 3 mm, 13 mm, 9 mm, 7 mm, 1.5 mm, 8 mm, 5 mm, 11 mm, 10 mm, 6 mm, 4 mm, 3.5 mm, 7.5 mm, 12.5 mm, 10.5 mm, 9.5 mm, 6.5 mm, 4.5 mm, 11.5 mm, 5.5 mm, 8.5 mm Spiral/Cut:-Right Hand Spiral/Right Hand Cut Double Margin:-No Series:-DWD