One Nasty Clamp: The flexible clamp, designed specifically to work with portable strobes, LED lights, digital audio recorders, and action cameras. Easily clamp your portable strobes or LED lights into position. Works great with small digital audio recorders, too If you're a GoPro Camera user, this is your new best friend. Standard 1/4-20" tripod screw on the end of the flex-arm 100 % Made in U.S.A. Portland, Oregon to be exact.