Sealey 9 piece extra long vde trx star key set sealey premier ak7178 manufactured from heat treated and hardened chrome vanadium s2 steel with a chemically blackened finish for resistance to corrosion keys range in length from 135mm to 215mm and in size from t10 to t50 fitted with pp tpr handles keys are fully insulated to vde tuv gs and en 60900 standards to protect from electric shocks up to 1500v dc and 1000v ac ideal for technicians working on modern hybrid and electrical vehicles 15