- Insulated VDE blades according to IEC 60900 for safe working up to 1000 V- SL, length (mm): 2.5 x 0.4, 80/3.5 x 0.6, 100/4.0 x 0.8, 100/5.5 x 1.0, 125- SL (single-pole voltage tester), length (mm): 3.0 x 0.5, 70- PZ, length (mm): PZ1, 80/PZ2, 100- Hexagonal roll-off protection against annoying rol ...