- Home
- Catalogues
- List of Supervising Constructions for High School - High School 2025-2026
- Catalogue of Science and Technology Aids 2025-2026
- Design & Technology Catalogue Primary Schools 2024-2025
- Catalogue of Science and Technology Aids 2024-25
- Catalogue of Science and Technology Aids 2023-24
- Christmas Crafts Set
- Nursery Schools Catalogue 2022-2023
- Nursery Schools Catalogue 2020-2021
- Nursery Schools Catalogue 2018-2019
- Happy and Creative Hands
- Jobs Category
- About us
- FAQ
- Terms and conditions of use
- Privacy Policy
- Cookies Policy
- Payment Methods
- Shipping Methods
- Returns Policy
- Payment Response
- Registration Successful
- Shipments to Greece
- New Service Point
- Teacher Registration
- Box Now Shipping Service
- 40 years Antoniadis
- Catalogues
- Catalogues
- About us
- Payment Methods
-
Educational Products
-
School Equipment
- All
- Write 'N' Wipe Boards
- White Magnetic Boards
- Board Erasers & Cleaners
- Interactive Boards
- Cork Boards
- Boards Paper Roll
- Talking Points
- Measuring Instruments
- Rotary Trimmer & Guillotine Machines
- Binding Machines
- Laminators
- Maps
- Literacy
- Time
- Presenters
- Music Instruments
- Batteries
- USB Memory Sticks
- Pocket Charts
- Various
-
Stationery
-
STEM - Robotics - Programming
-
Electronics
-
Educational Toys & Construction Kits
- All
- Mechanics
- Robotics
- Coding
- Simple Circuit Kits
- Science
- Green Science
- Planets
- Dinosaurs - Volcanos
- Animals
- Lenses
- Logic / Understanding
- Card & Board Games
- Rubik's Cubes
- Puzzles
- Magnetic Boards
- Hama Beads
- Painting Sets
- Craft Sets
- Creative Hands
- Soft Play Dough
- Fridge Magnets
- Wooden toys
- Baby Toys
- Gadgets
- Construction "Antoniadis"
- Seasonal
- Birthday Gifts
- Gift Vouchers
-
Tools & Adhesives
-
Craft Materials
- All
- Resin Art, Casting & Sculpting
- Decoupage & Mixed Media
- Items for Decoration
- Model Making & Mockup Supplies
- Creation Materials
- Decoratives
- Paints - Colours
- Mediums & Auxiliaries
- Canvases & Canvas Panels
- Clocks & Accessories
- Cards & Papers
- Fabrics
- Scrapbooking - Papers
- Powertex
- Quilling
- Seasonal
- All
- Acrylics
- Metallic - Pearl
- Chalk Paints
- Oil Paints
- Watercolours - Temperas
- Glass paints
- Fabric Paints
- Pouring Paint Sets
- Face painting
- Lasur Paints
- Chalkboard
- Pencils
- Chalks
- Markers
- Pastel-Crayons
- Outliners
- Alcohol Inks
- Spray
- Pigments for Liquid Glass
- Pigments
- Coloring Books
- Painting by numbers
- Paint Palettes and Containers
-
Art Supplies
HSS Step Drill Bit Set 4-32mm 1/4" Hex (3 Pieces)
The Crownman Step Drill Bit Set (3 Pieces) is engineered from premium HSS (High-Speed Steel), making it a must-have for professionals and DIY enthusiasts. It features a 1/4" Hex shank ensuring a secure, slip-free grip in any standard power drill or impact driver. Covering a hole diameter range of 4-12mm, 4-20mm, and 4-32mm, this step drill is perfect for fast, clean hole enlargement in thin metals and plastics, while also serving as an excellent choice when you need wood drill bits to prevent splintering.
High-Precision Hole Making in Thin Metals & Wood
The optimized cutting geometry of this step drill bit allows for the rapid removal of chips and sawdust, preventing the tool from binding. As a result, this bit guarantees impressively clean drilling, making it far more versatile than traditional wood drill bits or metal bits, since it cuts multiple hole sizes with a single accessory.
- Durability and Longevity: The HSS (High-Speed Steel) construction offers exceptional heat resistance and reduced wear, even during demanding DIY home repairs.
- Maximum Stability: The 1/4" Hex shank (Quick-change) eliminates spinning in the chuck and allows for lightning-fast bit changes on your power drill or impact driver.
- Clean Cuts: The multi-step design ensures smooth, burr-free edges on metal and minimizes splintering when tackling woodworking projects.
Frequently Asked Questions
Q: Is it compatible with an Impact Driver?
A: Yes, featuring a standard 1/4" hex shank, it fits perfectly into quick-release impact driver chucks, providing strong and stable torque transfer.
Q: Should I use low RPMs?
A: For step drills, low to medium speeds are recommended, especially on metals, to prevent overheating and maintain the sharpness of the bit. Using cutting fluid on metals will also extend the life of the accessory.
| Drill Bit Type | Step Drill (Cone) |
|---|---|
| Material | HSS (High-Speed Steel) |
| Diameter / Range | 4-12mm / 4-20mm / 4-32mm |
| Shank Type | 1/4" Hex |
| Suitable For | Thin Metals, Plastics, Wood |
The product is delivered as a 3-piece set (4-12mm, 4-20mm, and 4-32mm drill bits), ready to upgrade your toolbox setup.