Meets your requirements: Continuously adjustable wrench size for a wide range of applications. Offers you full protection: Each tool individually tested at 10,000 V AC and approved for 1,000 V AC. Application: Safe installation of terminals and sleeves, conductor connections, screwing of busbars. For work in the area of live parts up to 1,000 V AC. Additional information: Tested in accordance with EN/IEC 60900.