Standard 1/4 thread mouth 6mm, can connection to a three-way bracket, plugged into a grounding bracket, and can clamp flashlight size of 20-50mm. Multifunctional designing, can use as a flashlight clip, fishing light clip, tripod clip and more, and practical. Equipped with protective pad to scratches and abrasions. Lightweight and portable, easy to carry and use. Adhesive Tape strap is adjustable, and remove, and do not require any tools.