The Z-Series 3/8" Sq. Dr. Socket Set with 72 Tooth Ratchet is a versatile and comprehensive 26-piece toolset designed for a wide range of applications. This set includes 3760Z extension bars in lengths of 75, 125, and 250 mm for extended reach, along with 3400MZ standard length 6-point sockets in sizes 5.5, 6, 7, 8, 10, 12, 13, 14, 17, 19, 21, and 22 mm. Additionally, it features 3300MZ deep 6-point sockets in sizes 8, 10, 12, and 14 mm, as well as 3300CZ spark plug sockets in sizes 14, 16, and 20.8 mm. For enhanced versatility, the set includes a quick spinner for fast manual adjustments, a 72-tooth ratchet for smooth and precise operation with minimal movement, and a universal joint that allows for flexible access to tight spaces. 

Ko-ken Ratchets

Ko-ken ratchets are known for their very low backlash, small head sizes, and high torque ranges.  We designed the new 72 tooth ratchet without compromising on our traditional strengths.  The patented design of the 72T combines the low backlash, small size, and has a 10% higher torque limit in comparison to the 36 tooth ratchet.  The legacy 36 tooth ratchets move 10°/click. The new 72 tooth ratchets move 5°/click.