1-4 Inch Drive External Star Socket Set with Rail, 8-Piece E4-E12 SHD90115

Tekton 1/4 inch drive 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 clear coat 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. This set includes socket rail organization with twist-to-lock clips. External Star Geometry – External star (E-Star) sockets have an internal 6-lobe geometry designed for a high-torque fit that resists slippingMaterials – The sockets are made from 50BV30 steel and hardened to 40–47 HRC for strength and durabilityExterior and Interior Finishes – The sockets are protected against corrosion with chrome plating on the outside and clear coat on the insideLarge, 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 surfaceSocket Rail Organization – The twist-to-lock clips on the rail holds sockets securely and can be repositioned anywhere along the rail8-pc. 1/4 in. drive external star sockets: E4, E5, E6, E7, E8, E10, E11, E128 in. gray socket rail