This adapter transforms a 3/8" mounting hole to a 1/4" mounting hole.
Many camera heads come standard with a 3/8" hole. The Revolve Dolly includes a standard 1/4" screw. If you are using a camera head with a 3/8" hole with the Revolve Dolly, this adapter will be necessary.
Adapter has a slot in the middle for installation with a flat head screw driver.