The F-64 is the world's fastest quick extend tripod. FotoPro patented leg-lock extend technology will ensure you're setup within seconds. Includes 1/4" and 3/8" thread. iSpeedy System The newest leg extension technology "iSpeedy System" allows you to extend and collapse each section of your monopod faster than ever. You simply pull the section to the desired length and it stays locked at that position. To collapse, you twist and push each section back into place. It will take you less than a second to fully extend or collapse each section of the monopod. The world's fastest quick extend monopod. Our patented leg-lock extend technology will ensure you're setup within seconds.