Vacuum Suction Cup 20mm Ball Head Adapter Windshield Holder for GoPro 11 Insta360 X3 Stabilizer Mount Bracket Phone Stand

Suction Cup 20mm Aluminum alloy 1/4 Screw Ball Head Adapter

1/4 screw hole to 20mm ball head,

the inner thread of ball head is 3/8",

the material of ball head is aluminum alloy