The G-Force M3 locknut wrench is designed with the heli builder in mind. It allows for installing M3 locknuts into tight areas that require side access at 90 degrees. Also, the G-Force M3 locknut wrench has a recessed pocket to hold the M3 locknut for easy installation or removal of the M3 locknut. We also pre-tapped the tool with two M3 holes, so that you can attach it to a longer handle for reaching into deeper areas.