Two-Pack 3/8 in Square Socket Adapters for Hex Tools ✔️ 2-pack, 10 mm square tip (3/8 in) and 1/4 in hex shank, HSS This socket adapter set is made from hardened and treated high speed steel (HSS) for lasting strength. It is designed for manual drive use or with power tools via plug-in shanks, and it converts hex drive to a square head for socket extension and quick bit changes. ✅ Hardened and treated HSS for long life ✅ Spring-loaded ball bearing on each square head to keep sockets secure ✅ Square head size 3/8 inch (10 mm) with hex shank 1/4 inch (6.35 mm) ✅ 2-pack for versatile pairing in automotive DIY 💡 What is a square socket adapter used for in tool kits? Handy device to connect hex drive bits to a square drive for extended reach and compatibility. Converts a hex drive to a 3/8 inch square head for use with sockets and extensions Spring-loaded ball bearings lock the socket to prevent slipping during use Made from hardened high speed steel for durable performance in automotive work Two-pack provides a ready-to-use spare or mixed setup for different tasks ✝️