High quality bit holder for ESD-safe working. The electrical surface resistance of the Wera ESD material is at 106 - 109 Ohm. This dependably protects components against electrostatic energy and associated damage. The Rapidaptor quick-release chuck enables rapid bit change without needing any special tools. Kraftform Plus handle for pleasant, ergonomic working that makes blisters and calluses a thing of the past. Hard gripping zones for high working speeds whereas soft zones ensure high torque transfer. Suitable for bits with ¼" hexagon head drive as per DIN ISO 1173-C 6.3 and E 6.3 (ISO 1173).