13 PACK TRX Star SECURITY Socket Bit Set1/4" and 3/8" Square Drive BLACK OXIDEDrop-forged one-piece Chrome Vanadium steel, specially hardened and tempered. Security TRX-Star type head. Finished in black oxide for corrosion resistance. Supplied on two railsFeatures: Drop-forged one-piece Chrome Vanadium steel, specially hardened and tempered. Security TRX-Star type head. Finished in black oxide for corrosion resistance. Contents: 1/4"Sq Drive; T10H, T15H, T20H, T25H, T27H, T30H, 3/8"Sq Drive; T40H, T45H, T47H, T50H, T55H, T60H, Minimum/Maximum Length; 25/40mm, 3/8"Sq(F) x 1/4"Sq(M) Adaptor. Supplied on two rails. Lifetime guarantee . Specification: Contents -1/4"Sq Drive; T10H, T15H, T20H, T25H, T27H, T30H, 3/8"Sq Drive; T40H, T45H, T47H, T50H, T55H, T60H, 3/8"Sq(F) x 1/4"Sq(M) Adaptor Drive -1/4" and 3/8"Sq Maximum Length -40mm Minimum Length -25mm Net Weight -0.37kg Further Information We sell a wide variety of tools and workshop equipment for both the DIY and Professional markets. Alias: ys01209 Loops 13 PACK TRX Star SECURITY Socket Bit Set - 1/4" & 3/8" Square Drive BLACK OXIDE