Hole saw set GEKO G40200 — bi-metal for metal with titanium drill, 6 pcs, sizes 16–35 mm

GEKO G40200 is a 6-piece bi-metal hole saw set designed for cutting round openings in sheet metal and thin-walled pipes. The set covers sizes from 16 mm to 35 mm and includes a titanium-coated pilot drill for precise centering. Intended for use with standard drills and drill drivers, this kit supports plumbing, HVAC, electrical and general metalworking tasks that require clean circular cutouts.

Advantages

The bi-metal construction combines durability and flexibility to withstand the stresses of cutting metal while reducing the risk of premature tooth wear. The included titanium-coated pilot drill improves centering and initial penetration, shortening setup time and reducing walking. A compact selection of six commonly used diameters provides versatility for a range of hole sizes without carrying an excessive number of blades.

Suitable for

• Making round holes in thin sheet metal and metal panels
• Cutting access or routing holes in HVAC ductwork
• Drilling openings for pipes and conduit in plumbing and electrical installations
• Workshop metal fabrication and maintenance tasks

Key specifications

• Material: bi-metal construction suitable for metal cutting
• Pilot drill: titanium-coated for improved centering and wear resistance
• Included sizes: 16 mm, 18 mm, 20 mm, 22 mm, 30 mm, 35 mm
• Quantity: 6 pieces
• Compatible with: standard drill chucks and drill drivers

How to use

Select the hole saw diameter that matches the required opening. Secure the pilot drill in the arbor and tighten the hole saw to the arbor or mandrel according to the tool’s instructions. Clamp the workpiece where possible to prevent movement. Start drilling at low speed to allow the pilot bit to locate the center, then increase speed steadily while applying consistent pressure. Clear metal shavings periodically and allow the blade to cool to avoid overheating. After cutting, remove burrs from the hole edge as needed for a clean finish.

Usage recommendations

Use cutting oil or lubricant when drilling ferrous metals to extend blade life and improve cutting performance. For thicker materials, make shallow passes and allow the saw to cool between cuts. Always wear appropriate eye and hand protection when operating power tools.