2 Pcs 1/4 Square Drive To 1/4 Hex Socket Bit Converter Screwdriver Bit Adapter
It is used for screwdriver bit, socket adapter,step drill,chamfer converter. 6.3mm series screwdriver head connector. 2x 1/4" square hole to 1/4" hex converter. Type: 1/4" square hole to 1/4"(6.3mm) hex.