https://www.amazon.com/dp/B08X3VXX95 - Shop on Amazon ✔️ PROFESSIONAL COUNTERSINK DRILL BIT SET – Includes three #8 (11/64″) tapered drill bits designed for up to 3/8″ (10mm) screw heads, plus one extra HSS M2 (6542 grade) tapered drill bit for extended use. Also comes with a stop collar and hex wrench for precision adjustments. ✔️ ADJUSTABLE COUNTERSINK DEPTH – The adjustable stop collar allows for precise control over counterbore depth, ensuring a flush and professional finish. The adjustable cutters can be modified to fit a variety of screw sizes, making it a versatile tool for woodworking projects. ✔️ QUICK-CHANGE COMPATIBILITY – Equipped with a universal 1/4″ hex shank, making it compatible with all 1/4″ quick-change chucks for fast and efficient bit changes. ✔️ DURABLE & HIGH-PERFORMANCE MATERIALS – Built under JNB Pro’s strict quality standards, featuring High-Speed Steel M2 (6542 grade) drill bits for long-lasting sharpness and fast drilling. The Carbon Steel #45 countersink cutters are coated with Black Oxide for superior corrosion resistance and durability. ✔️ PERFECT FOR PROFESSIONALS & DIYers – This set is ideal for cabinet makers, furniture builders, and woodworking enthusiasts who need clean, precise countersinking for hardwood, softwood, MDF, and plywood.