TorqueMaster® represents decades of fastening innovation. Incorporating a Tri-Lobe design that dovetails with the hand, and Gel-Grip for increased torque and turning power, as well as insulated & precision machined S3 SVCM Alloy Steel Blades for durability and safety. Professional grade features such as VDE certification and drive indicators. VDE Screwdrivers are tested at 10,000v AC and approved for 1,000v AC or 1,500v DC. TorqueMaster® - The screwdriver perfected.