Features 1、5 PCS SET: This set provides the most commonly used drill bits with diameters of 15, 20, 25, 30 and 35 mm. 2、MAIN USAGE: A set of 5 piece drill bits, mainly used for drilling blind holes and oblique holes in cork, very useful. 3、PRECISE POSITIONING: The positioning tip of the woodworking drill bit allows precise positioning without sliding. 4、WIDE APPLICATION: The forstner drill set is widely used, suitable for electric drill, hand drill and lithium electric drill. 5、45 STEEL: These drill bits are made from high hardness 45 steel materials, ensuring lasting durability. Specification Item Type: Forstner Drill Bit Material: 45 Steel Length: Approx. 88mm/3.5in Shank Diameter: Approx. 8mm/0.31in, 9mm/0.35in, 10mm/0.39in Drill Diameter: Approx. 15mm/0.59in, 20mm/0.79in, 25mm/0.98in, 30mm/1.18in, 35mm/1.38in Package List 1 x 15mm Forstner Drill Bit 1 x 20mm Forstner Drill Bit 1 x 25mm Forstner Drill Bit 1 x 30mm Forstner Drill Bit 1 x 35mm Forstner Drill Bit