This 8-piece socket set features high-strength S2 steel star bits designed with a hollowed-out center to accommodate specialty tamper-resistant fasteners. Engineered to exceed ASME performance standards, these sockets utilize cold-forged chrome vanadium steel for maximum durability in automotive and professional applications.

• Tamper-resistant design features a center recess for security fasteners and works with standard 6-point star designs.
• Star bits are machined from high-strength S2 steel to prevent twisting and deformation under high loads.
• Socket bodies are constructed from cold-forged, heat-treated chrome vanadium steel for long-lasting durability.
• Permanent stamped size markings ensure easy readability that won't fade over time.
• Ball detent recess on the drive end provides a secure fit on ratchets, adapters, and extensions.
• Corner recesses on drive ends optimize torque transmission to the flats, reducing slipping and rounding.
• Exceeds ASME performance standards for professional-grade reliability.
• Comprehensive 8-piece set includes: 1/4 in. drive (TT15, TT20, TT25, TT27, TT30) and 3/8 in. drive (TT40, TT45, TT50).