Application: For all work on electrostatically sensitive components. Handle: Ergonomic multi-component handle with roll protection. Handle: With 4 mm hexagon socket for all SYSTEM 4 blades. Handle: Enables variable combination blade length adjustment from 18 - 90 mm. Handle: ClickStop ball clamp guarantees a secure hold and quick blade changes. Handle: Surface resistance 10^6 - 10^9 Ohm. IEC 61340-5-1.