Expert quality XP1000, slimline blade with an insulated sheath the same diameter as the blade, enabling access to deep-seated screws found in terminals and switchboards. The patented dual-layer insulation ensures damage is highly visible. Specifically designed for use with electrical screws on RCB and MCBs within distribution and consumer units. Individually tested to 10,000V, suitable for working on live circuits of 1,000V AC and 1,500V DC. Ergonomic soft grip bi-material handle allows free spinning in the palm of your hand to quickly tighten screws, but also allows transfer of torque when needed. Designed with flat sides to prevent them from rolling. SCVM steel blades hardened, tempered and chemically blackened with a precision-machined tip for exact fit to prevent screw damage.