Pocket Wrench Keychains – Metric (M4–M8)

This is a set of flat metric wrenches designed to fit standard M4, M5, M6, and M8 bolts and nuts. Compact and lightweight, each wrench is sized for keychain use and can serve as an emergency tool for quick adjustments or light-duty fixes.

Ideal for makers, hobbyists, or anyone looking to carry basic tools on the go. These keychain wrenches are perfect for prototyping, assembling printed parts, or handling loose hardware without reaching for a full toolbox.