Drill Bit Adaptor Set 3pc 3.4.5mm Fem Rnd- Grub Screw Type 1/4'm Hex S

Features

• 3 sizes included: 3 mm, 4 mm and 5 mm female round adaptors.
• 1/4' hex shanks: Drop-in compatibility with quick-change chucks and bit holders.
• Grub-screw retention: Positive clamping on smooth round shanks to minimise slip.
• Durable alloy-steel bodies for repeat workshop use.
• Compact length for better control and reduced run-out.

Benefits

• Faster swaps: Move from micro drill bits to drivers without re-chucking.
• Secure hold: Grub screw locks small round shanks that standard chucks can’t grip as firmly.
• Versatile: Covers common 3/4/5 mm shanks used in pilot and precision drilling.

Extra Information

• Tighten the grub screw against the drill bit’s flat (if present) for best anti-slip performance.
• Use a quality bit holder if extending reach; excessive extension can increase run-out.
• Best for light drilling and positioning; match feed and RPM to the bit size and material.

Specifications

Safety

• Disconnect the tool before installing or removing bits.
• Ensure the grub screw is firmly tightened; re-check periodically during use.
• Use appropriate speed and feed for the bit diameter and material to avoid breakage.
• Wear eye protection; small bits can snap under misuse.