Features: Material: chrome vanadium steel Color: silver Size:1/4" square hole to 1/4"(6.3mm) It is used for screwdriver bit, socket adapter,step drill,chamfer converter 6.3mm series screwdriver head connector 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. Quantity: 2pcs Package Contents: 2 x 1/4" square hole to 1/4" hex converter On 21-Aug-2026 at 09:22:33 BST, seller added the following information: