Quality XZN triple square spline socket bit set - 10 different sizes * Drop forged, heat treated chrome Vanadium steel socket with S2 bits * Durable chrome plated square drive socket - oil and corrosion resistant * Comes with 10 pieces of the most popular bits in 1/4, 3/8 and 1/2-inch drive * XZN bits are specially used on all European vehicles - VW, Audis, etc