EXTRACUT T.C.T. Hollow Drill Bits for Wall (wall hole saws) specialized tools designed for drilling large-diameter through-holes in concrete walls, brick, masonry blocks, and aerated concrete. Featuring aggressive tungsten carbide teeth on a heavy-duty steel body, these bits excel in HVAC air conditioning pipe penetration, water pipe installation, electrical conduit routing, and architectural feature creation.
Key Features
- Aggressive Carbide Teeth — Large-format tungsten carbide tips with positive rake angle provide aggressive cutting action in abrasive masonry and reinforced concrete materials.
- Reinforced Steel Body — Thick-wall seamless steel tube construction with welded connection shank withstands high-torque hammer drill impacts without deformation.
- Short-Length Design — Optimized body length reduces deflection and vibration during wall penetration, improving hole straightness and surface finish.
- Multi-Material Capability — Effective on concrete, brick, block, aerated concrete, stucco, and light-weight masonry without switching tools.
- Quick-Change Shank — SDS-plus / SDS-max or round shank options compatible with all common rotary hammer drills for fast setup.
- Center Drill Pilot — Integrated center pilot bit (included or replaceable) guides initial penetration and maintains hole accuracy through deep walls.
- Deep Gullet Design — Wide chip gullets between teeth prevent clogging when drilling through reinforced concrete with rebar exposure.
Applications
Essential for HVAC contractors (air conditioning pipe wall penetration), plumbers (water supply/drainage pipe routing), electricians (conduit and cable tray wall pass-through), building renovation projects, and construction sites requiring clean, large-diameter holes through load-bearing and partition walls.
Specifications
| Specification |
Value |
| Diameter Range |
Ø30mm – Ø200mm (1-3/16" – 7-7/8") |
| Working Length |
200mm / 350mm / 500mm / 650mm |
| Total Length |
300mm / 500mm / 700mm / 900mm |
| Body Material |
High-Carbon Seamless Steel Tube (Wall 2.5-3.5mm) |
| Tip Material |
Tungsten Carbide (YK15 / YG11C Grade) |
| Shank Type |
SDS-plus / SDS-max / Round Shank (19mm / 22mm) |
| Tooth Count |
4 – 10 (varies by diameter) |
| Drill Type Required |
Rotary Hammer (Hammer Function ON) |
| Max Wall Thickness |
Up to 500mm (with extension rods) |
| Application Materials |
Concrete, Brick, Block, Aerated Concrete, Masonry |