5-Piece Set: The set includes 5 tapered bits in sizes 1/8 inch, 9/64 inch, 5/32 inch, 11/64 inch, and 3/16 inch drills, plus a 1/2 inch counterbore and a 1/4 inch hex shank for secure grip and universal compatibility with most drills. Depth Adjustable: Both pilot drill and counterbore depth are adjustable using the included wrench and depth stop, allowing for accurate drilling. The plastic collar helps reduce surface marring. Sturdy Construction: Features M2 HSS pilot drill bits with spiral chip flutes for fast cutting. Steel alloy cutting edges produce smooth countersink and counterbore holes. Wide Application: Suitable for use with natural wood, chipboard, engineered wood, plywood, MDF, decking, drywall, and various plastic boards. For best results and clean edges, operate the countersink at low speeds, around 200 RPM. Color: As shown in photo Material: Aluminum Alloy Package Contents: 5 x Tapered Bits Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual item. Measurement may vary by +/- 1-3 cm.