Rock Solid 12 Inch Extension Adapter For Diamond Core Drill Bits With 1 1 4 By 7 Thread Rig Ready Coupler Built Like A Tank For Smooth Masonry Piercing On Job Sites

Heavy Duty 12 Inch Extension Rod For Core Drilling Jobs
✔️ 1-1/4 by 7 thread adapter hollow shaft heat treated steel build

This single 12 inch extension rod slides right onto your diamond core drill rig so you can punch through thick masonry without losing power. Crews grab this setup for chiseling big holes through concrete blocks, brick facades, and granite floors out in the field.

✅ 12 overall length gives you room to drill past surface layers
✅ Hollow middle tube feeds consistent water flow to kill dust and cool the bit
✅ Heavy gauge carbon steel frame takes heavy abuse and holds tight under pressure
✅ 1-1/4 by 7 male thread hook fits standard rig ready core drill couplers

💡 What makes a rigid extension bar necessary for deep masonry coring?
Using a handy coupling spacer keeps your core drill locked straight while punching through tough substrates.
- Extra length stops motor burnout when biting into solid concrete
- Inside water path washes away slurry so your diamond segments stay sharp
- Knurled threads bite into the drill chuck and never loosen during pull backs
- Solid steel body eats up shock and keeps your hole round and true

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