Kraftform-Plus-VDE-Screwdriver-Set-Screw-Grips-Set-of-8-SL-PH-Wera-TBK-160I-7-p-The-Wera-Series-160-i-7-Insulated-screwdriver-sets-are-tested-individually-for-dielectric-strength-under-a-load-of-10-000-volts-so-as-to-ensure-safe-working-with-loads-up-to-1-000-volts-They-have-a-premium-Gold-Lasertip-a-tip-which-has-a-laser-roughened-surface-which-literally-bites-into-the-screwhead-reducing-cam-out-&-eliminating-the-need-for-two-handed-screwdriving-p-p-They-have-a-significantly-ext