Keyless drill chuck
HERMAN BF-20 Fine ½ʺ
For impact drills

Non-slip surface treatment by coating:
allows reliable clamping of the tool even with oily hands

AUTO-LOCK SOUND function:
allows quick instrument change without the need for an additional instrument with an audible click sound when locking

ANTI-LOCK function:
prevents the tool from loosening when the tool is switched off and minimises jaw jamming due to inertia when releasing the tool

Simple and precise design:
high clamping force with max. 0.3mm circumferential throw of the sleeve

Positioning of the chuck housing by means of elastic ratchets:
only a small tightening force is required for a controlled and firm hold of the tool

Röhm licence:
time-tested gentle, reliable and firm fit

High fatigue life:
allows more than 12,000 x tighten and loosen tool

Recommendation:
Do not leave the chuck dry and, especially when working in wet environments, use cutting oil to lightly lubricate the moving parts