The Kauplus 16 pcs XZN Triple Square Bit Socket Set, includes 1/4inch, 3/8inch and 1/2 inch Drive Standard and Extra Long Spline bit socket. Well made Comprehensive 12 Spline socket bit for work on European automotive vehicles’ repair and maintenance. Ultimate Durable S2 and Cr-V Steel constructed for maximum strength and corrosion-resistance. This Spline Tip Bit Socket Set Not intended for use with any impact tools/ impact wrenches or other power tools, designed for breaker bars, torque wrenches and ratchets. Made in Taiwan