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Last updated: June 2026 | Author: KHM Megatools Editorial Team — Metalworking & Fabrication Specialists
3Keego is a Taiwanese precision cutting tool brand specializing in tungsten carbide tipped (TCT) annular cutters, TCT hole saws, HSS spiral flute drill taps, SDS-Plus rebar cutters, and magnetic drill accessories for professional metalworking applications. 3Keego in the Philippines is used by structural steel fabricators, magnetic drill operators, MEP contractors, mechanical maintenance teams, machine shop owners, welding fabricators, electrical panel installers, signage contractors, and industrial procurement officers who need clean, accurate, repeatable holes in steel, stainless steel, cast iron, aluminum, and reinforced concrete. Where premium imports like Hougen, Magbor, or Karnasch carry import-grade premium pricing, 3Keego delivers Taiwan-made precision at practical Philippine prices — making professional-grade annular cutting accessible to Filipino fabrication shops, contractors, and maintenance teams.
The 3Keego collection at KHM Megatools covers the complete cutting-accessory range fabricators need — including 3Keego TCT Annular Cutters (HC50B and HC35B series for magnetic drill use), 3Keego TCT Hole Saws (HG series for thin steel and sheet metal work), 3Keego HSS Spiral Flute Drill Taps (JDA series, combined drill-and-tap operation), 3Keego SDS-Plus Rebar Cutters (HAA series for reinforced concrete with embedded steel), 3Keego TCT Annular Cutter Pilot Pins (centering and slug ejection), the 3Keego AD32300N Nitto-to-Weldon Adapter, and the 3Keego B-400 Chuck Adapter (Weldon shank to 2–13mm drill chuck). Whether you fabricate steel beams in Quezon City, install electrical panels in Makati, drill plant equipment in Caloocan, work on bridge maintenance in Pampanga, or supply fabrication contracts in Cebu and Davao, 3Keego delivers the precision cutting performance Filipino fabricators rely on.
3Keego is positioned at the professional fabrication and industrial maintenance tier — premium Taiwan-made cutting tools at practical Philippine prices. Bulk and contractor pricing is available for fabrication shops, MEP contractors, and procurement buyers.
| Application | Recommended 3Keego Tool | Typical Machine | Why |
|---|---|---|---|
| Structural steel beam drilling | TCT Annular Cutter (HC50B) | Magnetic drilling machine | Deep, clean holes in 6–50mm thick steel with high accuracy |
| Stainless steel plate drilling | TCT Annular Cutter (HC50B) | Magnetic drilling machine | TCT teeth handle work-hardening stainless without dulling fast |
| Sheet metal and panel work | TCT Hole Saw (HG series) | Drill press or hand drill | Shallower cut depth matches thinner workpieces; lower cost |
| Electrical panel cut-outs | TCT Hole Saw (HG series) | Hand drill or drill press | Clean conduit and breaker box holes without burrs |
| Combined drill + tap operation | HSS Spiral Flute Drill Tap (JDA) | Drill press or tap wrench | One-pass operation saves time vs separate drill + tap |
| Reinforced concrete with rebar | SDS-Plus Rebar Cutter (HAA) | SDS-Plus rotary hammer | Cuts through embedded rebar without snapping the drill bit |
| Magnetic drill + Weldon cutter mismatch | AD32300N Nitto Adapter | Nitto-style mag drill | Bridges shank type so Weldon cutters work in Nitto machines |
| Annular cutter to drill chuck use | B-400 Chuck Adapter | Drill press with 2–13mm chuck | Allows Weldon shank cutters in standard chuck setups |
| Feature | TCT Annular Cutter (HC50B / HC35B) | TCT Hole Saw (HG series) |
|---|---|---|
| Primary Use | Deep, precise holes in thick steel plates and structural members | Holes in thinner steel, sheet metal, and panels |
| Typical Cut Depth | 50mm (HC50B) or 35mm (HC35B) | Shallower — typically under 25mm |
| Typical Machine | Magnetic drilling machine (mandatory for safety on thick steel) | Drill press or hand drill |
| Accuracy | Higher — pilot pin centers the cut precisely | Good for general work |
| Cutting Speed | Faster on thick steel — only cuts the annular ring, not full circle | Cuts entire material in the hole |
| Material Removed | Produces a solid slug (saved by pilot pin ejection) | Removes all chips from the hole |
| Shank Type | Weldon shank (3/4") — magnetic drill standard | Arbor with pilot bit + threaded mount |
| Cost per Cut | Lower for thick material (faster, less wear) | Lower up-front cost, higher per-cut cost on thick material |
| Best Buyer | Structural steel fabricator, magnetic drill operator, industrial maintenance | Electrical installer, panel fabricator, light metal shop |
TCT annular cutters (3Keego HC50B and HC35B series) are designed for deep, precise holes in thick steel plates (typically 6–50mm thick) using a magnetic drilling machine. They only cut the ring around the hole — leaving a solid slug — which makes them faster and more efficient than hole saws on thick material. TCT hole saws (3Keego HG series) are designed for thinner material (under 25mm typical depth) and work with drill presses or hand drills. They remove all the chips from the hole. Use annular cutters for structural steel and heavy fabrication; use hole saws for sheet metal, panels, and electrical work.
For most structural steel work, yes — a magnetic drill is the standard machine for TCT annular cutters. The magnet holds the drill firmly to the steel workpiece, providing the stable feed pressure annular cutters need for clean cuts. For shop work where steel can be moved to a stationary drill press, the 3Keego B-400 Chuck Adapter allows Weldon-shank annular cutters to fit a standard 2–13mm drill chuck — but this is only suitable for smaller diameters and lighter-duty work. For 25mm+ diameters or thick structural steel, always use a proper magnetic drill.
Weldon shank (3/4" with two side flats) is the most common international standard for magnetic drill cutters. Nitto shank (used on some Japanese-brand magnetic drills) has a different connection geometry. If you have a Nitto-style magnetic drill and want to use Weldon shank annular cutters (more widely available), the 3Keego AD32300N Nitto-to-Weldon Adapter bridges the connection. Check your magnetic drill's specifications before ordering cutters or adapters.
Yes — the 3Keego SDS-Plus Rebar Cutter (HAA series) is specifically designed to cut through embedded rebar in reinforced concrete without snapping or jamming, which is what happens with standard concrete drill bits when they hit rebar. When you encounter rebar mid-hole, slow the feed pressure and let the cutter chew through gradually. Don't ram through it — that breaks cutters and damages your rotary hammer. Use only with a compatible SDS-Plus rotary hammer (Bosch, Makita, DeWalt, Milwaukee, and most major brands have SDS-Plus models).
Service life depends heavily on technique — proper cutting fluid use, correct RPM, consistent feed pressure, and clean workpieces can extend cutter life 5–10× compared to dry, high-speed, or contaminated cutting. A well-maintained 3Keego TCT annular cutter can typically produce 50–200+ holes in standard structural steel before requiring replacement, depending on diameter and material. Dry cutting on stainless steel or cast iron can shorten life dramatically — to as few as 5–10 holes if technique is poor.
Pilot pin specifications must match the cutter's diameter range and depth (HC50B = 50mm cut depth; HC35B = 35mm cut depth). The pilot pin length must extend slightly past the cutter teeth to start the centering action, but not so far that it bottoms out before the cut begins. Each diameter range has its own pilot pin — check the product page or contact our team to confirm the right pilot pin for your specific 3Keego cutter. Never substitute a pilot pin from a different cutter brand without verifying dimensions.
Yes. 3Keego TCT annular cutters use the international Weldon 3/4" shank standard, which is compatible with most magnetic drills including Bosch (GBM 50), Hougen, Magbor, Nitto (with AD32300N adapter), Milwaukee, Steelmax, AGP, and other major brands. Always verify your specific magnetic drill model's shank specification before ordering. Our team can help confirm compatibility.
Warranty coverage varies by product. Cutting tools and consumables typically carry limited warranties covering manufacturing defects only — wear and tear, misuse, dropping, dry cutting damage, and use with incorrect machines void warranties. Please check the individual product page for specific warranty terms or refer to our warranty policy for guidance. Learn more about Warranty Policy »
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