NEO 1/2" long Spline sockets in 8 pcs set in popular sizes (10 to 24 mm). The product is made of durable chromium vanadium steel. Spherical sockets shape allows for versatile use for undoing screws: Torx, Spline, bihexagonal, metric, imperial and square. Tool quality confirmed with TÜV certificate and 25 years manufacturer`s warranty. NEO brand meets expectations of professionals.