1/4" square drive

and approvals as stated by the manufacturer

Wera 840/1 Z bits (item number 05056325001) are bits for internal hexagon screws designed for universal use

The 400NHG2B is designed for AC service up to 500 V and has an interrupt rating of 120 kA

Manufacturer: DSG-CANUSA

Skruetrækker klinge PH1-75mm 1000V isoleret SlimBit Unit(s):Pcs 1/4" square driveProduct Overview Product category: slimBit electric bit. The Wiha slimBit electric bit, Phillips PH1 (order no. 34583) is a 75 mm insulated bit designed for accessing low lying screws during electrical work. What the product is The Wiha slimBit electric bit, Phillips PH1 is an interchangeable bit with a Phillips PH1 profile and a total length of 75 mm. The blade construction incorporates Wiha slimTECHNOLOGY, where protective insulation is integrated