7pcs dual insulated rod screwdriver bits for replacing and using.14 bits，all kinds of convenience.Specification：Material：Chrome-Vanadium SteelHandle material: PPWithstanding voltage: 500VSize：16cm(L)Box:18.5x14.5x4cmType:PH2~-6.0; PH1~-5.0; PH0~-3.0; Y1~Y2; U2.6~H4; T10~T20; T15~T25Quantity: 500V insulated handle (about 110mm)Dual insulated rod x7Feature：Screwdriver bits with magnetic.7 pcs ，14 kinds screwdriver bits.Material technology:Chrome vanadium steel， after heat treatment， hardness above 60HRC (Rockwell hardness)， Brinell hardness between 5.0-6.5.It has good wear resistance under specific operating conditions.PP is the lightest at most common plastics， heat resistance， chemical resistance， good toughness.Package include:1x 500V insulated handle 7x Dual insulated rods