JJC Male 1/4"-20 to Female 3/8"-16 Threaded Screw Converter Adapter for Mounting Camera and Other Devices with Female 1/4"-20 Thread to Tripod, Monopod with Male 3/8"-16 Thread or Arca-Type Clamp

Male 1/4 inch-20 screw on the top, female 3/8 inch-16 thread hole and arca-type on the bottom Male 1/4 inch-20 thread to female 3/8 inch-16 thread or male 1/4 inch-20 thread to Arca-Type Compatibility: Enables you to mount camera and other devices with female 1/4 inch-20 thread to tripod, monopod and other devices with male 3/8 inch-16 thread or Arca-Type clamp Adapter Size: 1.5 inch diameter x 0.8 inch height Material: Aluminum converter with silicone pad