Wera 851 Series BiTorsion extra hard phillips bits.

Wera screwdriver bits are designed for tough applications found in both Trade and Industry.
Strictly controlled manufacturing processes helps fulfill the highest quality requirements. They provide the transfer of high torque values and deliver a long service life.

BTH extra hard bits are hard wearing, ideal for driving into general construction materials (soft-jointing) and repetitive work.

Use with Wera BiTorsion Rapidaptor bit holder for ultimate service life, 1/4in Hexagon drive