3/8" Drive M8 M10 M12 M14 M16. 8pc Spline Bit Socket Set. Spline bit sockets are specialized tools used for various applications that require precise torque and force. These sockets feature a unique spline design on their interior, which allows them to securely grip and turn spline bolts and fasteners, as well as other types of hexagonal-shaped screws and nuts.
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