Features
- Hex shank for reduced slippage
- Adjustable countersink depth (uses Allen wrench)
- Replaceable drill bit for extended service life
- One-step countersinking and counterboring
- Suitable for wood, plastic, and composite materials
- Compatible with most corded and cordless drills and drill presses
Specifications
| Model | SP506 |
| Pack Quantity | 1 |
| Shank Diameter | 0.25 in (1/4 in hex) |
| Number Of Flutes | 2 |
| Total Length (L2) | 3 in |
| Intended Screw Size | No. 6 (for No. 6 wood screws) |
| Working Length (L1) | 1 in |
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Drills pilot holes and produces a countersink and counterbore in a single operation for wood, plastic, and composite materials. The cutting tip is replaceable and the screw pilot depth is adjustable with an Allen wrench. The 1/4-inch hex shank is intended to reduce slippage and fits common corded and cordless drills and drill presses.
Project Ideas
Business
Pre-Drilled DIY Furniture Kits
Offer flat-pack kits (picture ledges, stools, shelves) with all pilot, countersink, and counterbore operations done. Include No. 6 screws and matched wood plugs. Customers only need glue and a driver. The adjustable depth control ensures consistent, pro-grade results at scale; the replaceable bit reduces consumable costs.
Stair Squeak Repair + Reinforcement
A mobile service that tightens treads and nosings with countersunk No. 6 screws driven from above, then plugs and finishes the holes to make repairs nearly invisible. Market to homeowners and property managers; quick, clean, and often done in a single visit.
Hidden-Plug Deck/Fascia Installations
Specialize in premium deck fascia and fence builds using composite or hardwood boards. Pre-drill and countersink every fastener to prevent blowouts and ensure flush or plugged heads. Upsell to color-matched or hardwood plug finishes for a high-end aesthetic on visible faces.
Drill Templates + Plug Supply Shop
Sell laser-cut drilling templates for common projects (shelves, frames, boxes) paired with No. 6 screws and matching wood plug packs. Offer subscription refills for replaceable pilot tips and plug assortments, plus downloadable layout guides for consistent hole spacing.
Premium Cornhole and Yard Games
Launch a small-batch brand of yard games (cornhole, ladder toss) featuring flawless, flush fasteners or contrasting hardwood plugs. Promote the clean, durable construction aided by precise pilot/countersink operations, and offer custom engraving or colors for events and corporate gifts.
Creative
Invisible-Plug Floating Shelves
Build sleek wall shelves with hidden fasteners. Use the pilot bit to drill pilot holes, countersink, and counterbore in one pass for every bracket and stretcher connection. Drive No. 6 screws, then glue in face-grain plugs cut from the same species for a seamless look. The adjustable countersink ensures uniform plug depth and the replaceable tip keeps cuts crisp across hardwoods and composites.
Knock-Down Plywood Shop Stool
Design a flat-pack stool with interlocking panels and No. 6 screws. Pre-drill all joints with the bit for clean, flush heads and deeper counterbores where you want to hide plugs. Mark repeat hole locations with a simple template for fast, production-style building. Great for experimenting with birch ply and color-contrasting plugs.
Tournament Cornhole Boards
Build regulation-size cornhole boards with tidy, flush fasteners. Use the pilot bit along the frame-to-top perimeter to prevent splitting and to sink screw heads below the playing surface. Leave the countersinks flush for a utilitarian look or plug with contrasting hardwood to create a premium finish.
Acrylic + Wood House Number Sign
Layer a clear or matte acrylic face over a wooden backer. Use the pilot bit at slow speed to create clean countersinks in the acrylic for flat-head screws, and deeper counterbores in the wood backer to accept plugs. The result: sleek, flush hardware and a modern mixed-materials sign ready for exterior use.
Modular Planter Boxes (Composite-Friendly)
Build patio planters from composite decking offcuts. The bit’s clean pilot holes prevent cracking in composites, and the adjustable countersink keeps screw heads consistently below the surface. Add removable slat panels held with countersunk No. 6 screws for easy seasonal swapping.