The 3/8 Sq. Dr. 15 Piece Z-Series 6-Point Metric Socket Set is a comprehensive and high-quality toolset designed for precision and versatility. This set includes sockets in sizes ranging from 5.5 mm to 22 mm (5.5, 6, 7, 8, 10, 12, 13, 14, 17, 19, 21, 22 mm), catering to a wide variety of tasks. It features a quick spinner, also known as a thumb spinner, for fast and easy manual adjustments, and a universal joint that pivots up to 50 degrees, allowing for flexible access to hard-to-reach areas. Additionally, the set is equipped with a 72-tooth ratchet, ensuring smooth and precise operation with minimal movement, making it an essential addition to any toolkit.

3/8" Square Drive 15 Piece Z-Series 6-Point Metric Chrome Hand Socket Set in Foam

Ko-ken 72 Tooth Ratchets – Precision, Strength, and Control

Ko-ken ratchets are renowned for their precision engineering, delivering exceptionally low backlash, compact head sizes, and high torque performance. The newly designed 72 tooth ratchet continues this legacy, combining our hallmark features with refined advancements.

Featuring a patented dual pawl mechanism with a single spring, this ratchet provides a smooth 5° arc swing, allowing for superior control in tight spaces. The innovative design increases surface area contact within the gear, resulting in a 10% higher torque limit while preserving Ko-ken’s signature low-torque backlash performance.

After four years of intensive development and testing, we’ve optimized the spring pressure to maintain a consistent, precise feel with minimal resistance—perfect for professional users demanding accuracy and durability.