• External Star Geometry – Shallow external star (E-Star) sockets have an internal 6-lobe geometry designed for a high-torque fit that resists slipping • Materials – The socket is made from 50BV30 steel and hardened to 40–47 HRC for strength and durability • Exterior and Interior Finishes – The chrome-plated exterior is highly corrosion-resistant and wipes clean to a mirror finish, and the interior chrome plating is supplemented with a clear coat or painted finish where needed for full coverage • Large, Stamped Markings – Permanently impressed into the material by a roll-stamp die and as large as possible while still being readable along the socket's curved surface • Secure Drive Tool Engagement – Detent grooves and beveled edges provide a smooth and secure connection with the drive tool
Tekton 3/8 inch drive shallow external star (E-Star) sockets are made from 50BV30 steel that's hardened to 40–47 HRC for strength and durability. The socket is protected against corrosion with chrome plating on the outside and chrome plating supplemented with a clear coat or painted finish where needed for full coverage on the inside. The socket has large, stamped markings that are permanently impressed into the material by a roll-stamp die and are as large as possible while still being readable along the socket's curved surface. Detent grooves and beveled edges provide a smooth and secure connection with the drive tool.