The draper 10 piece vde approved screwdriver and pliers set is manufactured from correctly hardened and tempered chrome vanadium steel with toughened cutting edges that have been finished with a hardwearing lacquer all the screwdrivers are manufactured from s2 steel with blades that are hardened tempered and chemically blacked each item is attached to fully insulated soft grip handles which have been thoroughly tested to 10 000v providing safe live line working at either 1000v ac or 1500v d