The FAMAG 3537 WS Hobby slip‑on countersink clips directly onto standard wood twist drills to perform drilling and countersinking in one smooth operation. Its five‑blade 90° head creates clean, burr‑free chamfers without a separate pilot hole. Hobbyline design excludes an Allen key for simple setup. 

🛠️ Robust Alloy Tool Steel Construction

Crafted from hardened alloyed tool steel, this one‑piece countersink resists wear under light to moderate use, maintaining sharp cutting edges for consistent performance in DIY projects.

🎯 Precision 90° Point Angle & Five‑Blade Design

Five evenly spaced cutting edges form a precise 90° angle, delivering smooth, chatter‑free countersinks. The ground blades score the hole perimeter for burr‑free walls and reliable screw seating. 

⚙️ Slip‑On Mounting Compatibility

Simply push the countersink onto any wood spiral drill bit with matching shank diameter—no adapter or hex key required. The secure friction fit keeps the countersink in place under normal drilling torque. 

🌲 Ideal for Softwood Applications

Optimized for drilling and countersinking softwoods, this tool excels in pine, spruce, and similar materials. For hardwoods or higher‑demand tasks, we recommend upgrading to the F2100 Classic or VARIO F2202 series. 

🔄 Drilling & Countersinking in One Operation

The integrated design eliminates the need to switch tools, saving time and reducing setup between drilling pilot holes and countersinking screw heads. 

📐 Available Diameters & Dimensions

Offered for inner diameters (I‑Ø) of 3 mm, 4 mm, 5 mm, and 6 mm, each countersink features an outer head diameter (A‑Ø) of 12 mm and an overall length (GL) of 20 mm. 

⚠️ Safety & Maintenance

Always secure your workpiece and wear eye protection. Clear chips from the blades regularly and replace the countersink when cutting edges dull to maintain clean, precise results.