The Draper 4 Piece 1/2″ Drive Spline Socket Bit Set is a professional socket set designed for working with spline fasteners commonly found in automotive and machinery applications. This comprehensive set includes four socket bits in the most frequently used metric sizes, each manufactured to professional standards for demanding workshop environments. Each socket bit in this set is constructed from hardened and tempered chrome vanadium steel for exceptional strength and durability, whilst the bits themselves are manufactured from S2 silicon steel with a sand blasted finish for enhanced grip and longevity. The 100mm overall length provides excellent reach into recessed areas, making these sockets ideal for engine work, gearbox maintenance, and brake system repairs where spline fasteners are commonly encountered. Practical design features include a knurled ring on each socket for improved grip when working in oily or awkward conditions, allowing you to maintain control even when wearing gloves. The set is supplied on a steel socket retaining rail that keeps the sockets organised and readily accessible in your toolbox or on your workbench. Features and Benefits: • Hardened and tempered chrome vanadium steel construction for long-lasting durability • S2 silicon steel bits with sand blasted finish for superior grip • 100mm length provides extended reach for recessed fasteners • Knurled ring design for enhanced control in challenging conditions • Steel retaining rail keeps sockets organised and prevents loss Contents: • M6 spline socket bit • M8 spline socket bit • M10 spline socket bit • M12 spline socket bit