Features
- 12-inch overall length
- Accepts 1/2-inch mandrels
- 7/16-inch shank
- Set screw for secure locking
Specifications
| Part Number | PCMEX12 |
| Length | 12 in |
| Accepts Mandrel | 1/2 in |
| Shank Diameter | 7/16 in |
| Shank Shape | Cylindrical |
| Material | Metal |
| Weight | 0.83 lb |
| Upc | 000346323634 |
Related Tools
Related Articles
12-inch mandrel extension for Power Change hole saw mandrels. Designed to accept 1/2-inch mandrels, it uses a 7/16-inch shank and a set screw to secure the mandrel during use.
Project Ideas
Business
On-site desk and countertop cable grommet retrofits
Offer a mobile service to add clean pass-through holes in installed desks, conference tables, and countertops. The 12-inch extension reaches tight backsplashes and under-cabinet areas where standard drills can’t fit, enabling dust-controlled, professional grommet installs without removing furniture.
Deck post lighting and hardware installs
Specialize in boring deep recesses and pass-throughs in existing deck and fence posts for low-voltage lights, post caps, or concealed fasteners. The extension keeps the drill clear of rails and corners while allowing deep, straight cuts in-place, minimizing tear-out and rework.
Log decor production line
Produce high-margin rustic goods—candle lanterns, succulent planters, and secret boxes—by batch coring reclaimed logs. The extension speeds safe, repeatable deep cuts and lets you work around clamps and jigs. Sell via craft fairs, Etsy, and wholesale to home decor boutiques.
RV/van/boat outfitting pass-through service
Install deck ports, drains, and cable/pipe pass-throughs in tight cabins and hull compartments where reach is limited. The long extension and secure set-screw connection provide stability for larger hole saws, enabling clean cuts in thick plywood, composite panels, and bulkheads.
Retail fixture and shelving modification
Partner with stores and shopfitters to add grommets, recessed mounts, and hardware holes in installed thick shelving and displays. The extension lets you drill in cramped aisles and close to walls, reducing downtime and avoiding teardown of fixtures.
Creative
Rustic stump side table with secret storage
Use a large hole saw on the 12-inch mandrel extension to core an 8–10 inch deep cavity into a stump or thick log. Use the extracted plug as a matching lid with concealed magnets or hinges. The long reach keeps the drill body clear of the stump and lets you create a clean, deep compartment.
Live-edge succulent planter slab
Bore a series of deep, evenly spaced pockets into a thick live-edge slab for succulent cups. The extension lets you center holes in thick stock and reach over clamps/cauls. Seal the cavities with epoxy or finish to create a durable, natural planter centerpiece.
Hollow-log pendant lanterns
Core out the center of short log sections from both ends to create a hollow body for LED tea lights or a small bulb socket. The extension provides clearance around bark irregularities and allows deeper, straighter cuts. Add decorative side ports using smaller hole saws for light patterns.
Hidden geocache fence post
Drill a deep cavity down into the top of a 4x4 or 6x6 post for a weatherproof hidden cache. The 12-inch reach lets you work on installed posts without removing nearby rails. Cap it with the original core or a fitted wood plug for a seamless disguise.
Recessed drink holders in chunky outdoor furniture
Add cup holders to thick picnic tables or bench arms by drilling clean, deep recesses with a hole saw. The extension clears armrests/backs and reaches the center of wide panels, creating uniform, professional-looking holders with optional drain holes.