The Stanley FatMax Parallel Tip VDE Insulated Screwdrivers have a VDE insulated screwdriver tip that is individually tested to 10,000 volts and guaranteed to 1,000 volts. The soft-grip handle gives the perfect combination of great grip plus reduced fatigue and its large diameter offers greater torque needed for driving wood screws. The handle is moulded directly to the bar giving a virtually unbreakable bond. The heavy-duty plastic sheath running the length of the bar protects the user from live current.Stanley FatMax VDE Insulated Screwdriver Parallel Tip has the following specification: Tip Size: 4.0mm.Blade Length: 100mm (4in).