Product Features High-Quality Construction: Made from premium steel, these countersink drill bits deliver exceptional performance and longevity, perfect for demanding woodworking tasks. Versatile Hex Shank: The 1/4" hex shank fits power drills and quick change clamp heads, providing easy and secure attachment for various applications. Adjustable Depth Stop: The adjustable stop collar offers precise control to set screw heads flush with the surface or to drill to a specific depth, enhancing project accuracy. Easy Installation: Each drill bit includes a hexagon wrench, simplifying installation and allowing quick adjustments as needed. Multiple Size Options: Available in sizes 2.8x8mm, 3x8mm, 3.2x8mm, 3.5x8mm, and 4x8mm to accommodate a wide range of woodworking drilling and counterbore needs. Product Specifications Product Name: Countersink Drill Bit Color: Red Material: Steel Size Options: 2.8x8mm, 3x8mm, 3.2x8mm, 3.5x8mm, 4x8mm Quantity: 5PCS Package Includes 5 x Drill Bits 5 x Wrenches