The bit is specified as particularly hard with reference to use on semi-hard materials and is manufactured for use with 1/4" hexagon tools

Type: 3/8" drive extension bar

Chemical resistance: Withstands oils

Source: Treston product literature (treston

Funktion: Hexagonal non-roll (anti-roll) feature

VDE-Isoleret kniv m. lige blad Unit(s):Pcs The bit is specified as. Dip coated insulation. 3 layer security color coded insulation. For work under voltage up to 1000 V according to IEC 60900. Straight blade. 3 multi layer coating with different colors indicating safety, danger or high danger. Plus a fourth in black to further protect the handle edges. This provides protection as well as a visual warning system. If the outer layer of insulation becomes damaged, the lighter color underneath will become visible and