3-Piece Black Nitride HSS Step Drill Bit Set (3-12mm/4-12mm/4-20mm) – Multi-Size Woodworking & Metal Hole Saw For DIY & Professional Use​

One Drill, Multiple Hole Sizes – Effortless Precision!​​ The ​​MARIKON 3-Piece Black Nitride Step Drill Bit Set​​ revolutionizes drilling with ​​multi-size capability​​ in a single bit. Perfect for ​​wood, metal, and plastic​​, these ​​high-speed steel (HSS) step drills​​ eliminate the need for multiple bits, saving time and workspace clutter. ​​Why This Set Stands Out:​​ ✔ ​​3 Versatile Sizes​​ – Covers 3-12mm, 4-12mm, and 4-20mm holes in one compact set. ✔ ​​Black Nitride Coating​​ – Boosts durability and reduces heat buildup for smoother drilling. ✔ ​​Straight Flute Design​​ – Prevents jamming and ensures clean, splinter-free edges. ✔ ​​HSS Construction​​ – Stays sharp longer, even with repeated use on hard materials. ​​Ideal for These Tasks:​​ → ​​Carpenters​​ – Drill hinge holes (4-12mm) or cabinet knobs (3-12mm) with ease. → ​​Metalworkers​​ – Enlarge holes in sheet metal (4-20mm) without burrs. → ​​Plumbers​​ – Create clean openings in PVC pipes for fittings. → ​​Electricians​​ – Adjust junction box holes or conduit entries. ​​Who Needs These Step Drills?​​ • ​​DIY Home Improvers​​ – Replace a drawer full of single-size bits with this space-saving set. • ​​Workshop Pros​​ – Speed up projects with fewer tool changes. • ​​Crafters​​ – Perfect for resin molds, leather holes, or acrylic displays. ​​Upgrade your toolkit with these precision step drills – drill smarter, not harder!​