Mount your photo or video accessories to the Kupo Hot Shoe Adapter 3/8"-1/4" with Barrel Adapter with an accessory foot that is compatible with any camera hot shoe or accessory cold shoe mount. The 1.5" stud has both 1/4"-20 and 3/8"-16 mounting threads along with two knurled locking wheels to add tension against an accessory to prevent it from moving. The anodized matte black adapter includes a double 1/4"-20 barrel adapter for those accessories with a male thread.