Convert your existing 1/4”-20 compatible camera mount, tripod, or monopod into a 17mm ball pedestal for mounting smartphones or tablets. This adapter is compatible with all camera mounts having a fixed 1/4”-20 screw bolt, as well as tripods and monopods with a 1/4”-20 screw bolt. (Mounts, holders, and devices sold separately.) Screw the adapter onto the 1/4”-20 threaded bolt, then attach a 17mm ball compatible adapter or holder. Use with one of Arkon's 17mm ball compatible adapters to convert to a 4-Hole AMPS mounting pattern (Model SP-SB-AMPS-KIT), Dual T-Tab mounting pattern (Model SP-SB-KIT), GoPro lateral screw mounting pattern (Model SP-SB-GPLAT), or Single T-Tab mounting pattern (Model SP-SB-KIT-1B).