• The Haoge 58mm (2.28") Discal Clamp is a Arca Swiss compatible screw knob clamp.
• It has a captive knob, safety-stop grooves, and a hollowed-out design that reduces the weight of the clamp.
• You can use an screw to mount it to an AS style ball head or panoramic head, and it will accept any standard Arca-Swiss quick release plate.
• With the female thread of UNC 3/8" and 3/8" to 1/4" screw adapter, can be used on virtually any head, tripod or monopod.