The FAMAG 2108 depth adjusting collar is a clamp-on accessory for twist drills that provides precise control over drilling depth. Simply slide the collar onto any compatible drill bit, secure it with the lateral set-screw, and drill to a consistent stop every time. Ideal for adjusting the depth of countersinks (type F2100, Ø 3–7 mm) and through-holes without guesswork. 

📏 Technical Specifications

• Material: Hardened tool-steel, precision-ground finish

• Locking Mechanism: Lateral attachment screw for secure, vibration-free operation

• 16mm Depth Adjustment Collar: for countersink 2100: 3 - 7 mm

• Available in sets
  5pc Set: Collars for Ø 4, 5, 6, 8, 10 mm bits—ideal starter kit.
  7-pc Set: Collars for Ø 3, 4, 5, 6, 8, 10, 12 mm bits—covers most workshop needs.

🎯 Key Benefits

• Consistent Depths: Eliminates over-drilling and under-countersinking across multiple holes.

• Quick Setup: Clamp-on design and knurled set-screw make depth changes tool-free and rapid.

• Durable Build: High-quality tool-steel withstands workshop wear and tear.

• Versatile Use: Perfect for woodworkers and metalworkers needing repeatable hole depths.

⚙️ Application Tips

1. Select the Right Collar: Use the individual 16 mm collar for single bits or opt for a multi-piece set if you work with various diameters.

2. Position Accurately: Slide the collar to the desired drilling depth mark on your bit’s shaft.

3. Tighten Securely: Use the lateral screw to lock the collar firmly—check before each hole.

4. Maintain Cleanliness: Wipe away chips and debris from both bit and collar to preserve accuracy.

5. Adjust RPM: When the collar is mounted, reduce spindle speed slightly (≈10 %) to avoid chatter.