Folding Type Hex Key Set(Metric or inch)

A folding type hex key set, also known as an Allen wrench set, is a compact and portable tool used to tighten or loosen hexagonal socket screws and bolts. The folding design allows for easy storage and convenient transportation. The set typically includes multiple hex keys of different sizes, all housed within a single folding handle.

The hex keys come in two common measurement systems: metric and inch (also known as SAE). Here’s a breakdown of each type:

Metric Hex Key Set: A metric hex key set consists of hex keys measured in millimeters (mm). The keys are sized according to the metric system, which is widely used in many countries around the world. The sizes typically range from very small, such as 1.5 mm, up to larger sizes like 10 mm or more.