KO-KEN Z-SERIES, 3/8 Dr Starter Set Includes 72 Tooth Ratchet & 12 Piece Socket Set on Rail Introducing the Starter 3/8 DR Ratchet and Socket Set from Ko-ken's Z-Series Range Ko-ken takes tool performance and precision to new heights with this exceptional Starter 3/8 DR Ratchet and Socket Set. As a part of the Z-Series Range, this set is designed for those who seek reliable, high-performance tools that deliver with compactness and efficiency. 3725Z Ratchet Constructed in Japan, this ratchet is a true example of master craftsmanship and the advanced engineering that Ko-ken is renowned for. The precise manufacturing tolerances of both the male and female Square Drive are carefully controlled to guarantee a secure fit between the socket and handle. The ratchet features an original Ball Holding system that provides a sturdy connection between the socket and handle. With a light, reversible ratchet movement, the 72-tooth, 178mm length tool ensures optimal performance even in confined spaces. The 3725Z ratchet sports a slim head width of 28mm and a total height of 24.5mm, making it a compact powerhouse that fits comfortably in your hand and your tool kit. RS3400MZ-12 To complement the ratchet, this kit includes the RS3400MZ-12, a meticulously crafted rail set suitable for a variety of hand tools. This compact accessory from the Z-Series line measures 20mm in length, fitting a drive of 1/4′′. The set comes with a diverse range of sizes from 7-19mm, featuring a 6-point stubby style. With a selection of 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, and 19mm, the rail set can accommodate all your needs. The magnetic rail ensures your sockets stay securely in place, while the stubby style offers the perfect solution for those hard-to-reach areas. As with all Ko-ken products, this set is manufactured in Japan, assuring the highest quality and long-lasting durability. This starter set from Ko-ken's Z-Series Range is more than just a collection of tools - it's a fusion of functionality, style, and innovation that will enhance your toolkit and your performance on any job. Made in Japan: Both the ratchet and the rail set are manufactured in Japan, reflecting the quality and precision of Japanese engineering. Tolerance-Square Drive: The male and female Square Drives are precisely controlled in their manufacturing tolerances to ensure a secure fit between the socket and the handle. Ball Holding Groove: This original Ball Holding system provides a secure connection between the socket and handle. Z-Series Compact Design: The products belong to the Z-Series range, known for their high-performance and compact design. Specifications 72-Tooth Ratchet: The 3725Z ratchet has 72 teeth, ensuring smooth operation and movement. 178mm Length Ratchet: The ratchet measures 178mm in length, providing a comfortable grip and use. Range of Sizes: The rail set contains sockets in a range of sizes from 7mm to 19mm, providing versatility for various tasks.