8PCS Upgrade Countersink Drill Bits Set, Quick-Adjust Two Flute TCT Alloy Tapered Counterbore with Adjustable Depth Stop Collar, Wood Countersink Drill Bit with Wrench for Woodworking Plywood MDF DIY
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- Upgraded Depth Adjustment: Just spin the knurled dial to set the countersink drill bit depth. 5x faster than wrenches – perfect for quick countersink depth changes without missing a beat
- Precision Depth Control: Aluminum auto depth stop collar with bearing stops instantly upon contact. Prevents over-drilling and tear-out. Upgraded locking mechanism holds depth firmly
- Upgrad Sharp: TCT (Tungsten Carbide Tipped) 2-flute bits deliver superior sharpness and hardness compared to standard HSS. The tapered tip design ensures smooth entry and cleaner countersunk holes
- Multi-Size Set: Includes 1/8"x3/8", 9/64"x3/8", 5/32"x3/8", 11/64"x1/2", and 3/16"x1/2" countersink drill bits, plus a dedicated adjustment wrench. Fits the most common sizes for everyday projects
- Professional Woodworking Set: Perfect for furniture assembly, cabinet installation, deck building and DIY. Works on solid wood, plywood, MDF, and particleboard. Storage case included – bits stay organized, never lost
Estimated shipping
Select a product to estimate shipping.What's upgraded? How are the bits packed?
Upgraded auto-lock—push up to unlock, turn to desired depth, release to auto-lock. No set screws, fast and easy.
Comes with a rigid plastic storage case with dedicated slots for each bit and accessory. Simply return each piece to its slot after use
Important note on receiving the order—upgraded vs. old version
We continuously improve the products. During transition, unavoidable a very small number of old units were mixed in. Old version works fine but lacks the auto-lock shown.
If you receive an old unit, just let us know—we'll process right away.
What material are the bits made of?
Alloy steel body with Tungsten Carbide Tipped (TCT) 2-flute cutting edges. Cuts cleaner and smoother than standard alloy bits
What sizes are included? How do I identify bit sizes?
5 sizes: 1/8"x3/8", 9/64"x3/8", 5/32"x3/8", 11/64"x1/2", and 3/16"x1/2". Each bit and its corresponding case slot are laser-engraved with the size—clear and easy to read at a glance
Any operation tips? Can this handle hardwoods?
Stop pressing immediately once the depth stop collar contacts the workpiece. Change bits on a stable surface to avoid losing the small screw. Optimized for wood, plywood, MDF, particle board
Product details
| Main Specification | |
|---|---|
| Included Components | Two-Flute TCT Alloy Tapered Drill Bits or Upgraded Adjustable Depth Stop Collar |
| Material | Tungsten Carbide or High Speed Steel (Hss) |
| Manufacturer | Vorhixa |
| Unit Count | 9 Count |
| Surface Recommendation | Wood |
| Cutting Diameter | 3.18 millimeters |
| Tool Flute Type | Spiral |
| Brand | Vorhixa |
| Cutting Angle String | 82 degrees |
| Number of Pieces | 8 |
| Finish Type | Uncoated |
| Product information | |
| Set Name | 8PCS Quick-Adjust |
| Technical Details | |
| Material Type | Tungsten Carbide or High Speed Steel (HSS) |
| Part Number | 9989B |
| Number of Flutes | 2 |
| Style | |
| Finish Types | Uncoated |
| Others | |
| Product Type | Countersink Drill Bits |