Size:1/4" square hole to 1/4"(6.3mm), 6.3mm series screwdriver head connector
It is used for screwdriver bit, socket adapter,step drill,chamfer converter, It is forged with high-quality chrome vanadium steel 50BV30, strong and durable.
The mirror finish is polished and chrome-plated, which has strong corrosion resistance and is not easy to rust.
Package Contents 4 x 1/4" square hole to 1/4" hex converter