Gedore TX 20 E5 6187640 TX Bits 4.73 mm M4 1/4 (6.3 mm)

Square drive as per DIN 3120 - C 6.3, ISO 1174, with ball retaining groove · Hand-operated, knurled grip · GEDORE vanadium steel 31CrV3, polished, chrome-plated

Price: 12.99 from Conrad Electronic