The SP-1420CAM adapter converts any mount or pedestal with a 17mm ball to a 1/4"-20 camera bolt pattern, making the mount compatible with DSLR or small action cameras. This package includes only the 17mm Ball to 1/4"-20 Camera Bolt Adapter. The tightening ring is not included with this adapter. For a 17mm ball to 1/4"-20 adapter that includes a tightening ring, Arkon recommends SP-SBH-KIT-CAM. No holders or mounts are included in this package.