This Super Clamp with 1/4 to 1/4 Screw Converter accepts 1/4" and 3/8" accessories. It comes with a 1/4 to 1/4 Screw Converter with the option to remove. It has a 10 lb load capacity and can clamp onto flat or round surfaces up to 1.75".
In the Box
IndiPRO Tools Super Clamp with 1/4"-20 to 1/4"-20 Screw Converter