A voice coil motor assembly includes a housing, a voice coil motor, a cover, and a transparent board. The locking ring is suitable to contract out of a groove in an opening in the pipe, vessel, or hub extending therefrom into an unlocking position and is suitable to expand wherein an outer portion of the locking ring extends into the groove in the opening in the pipe, vessel, or hub extending therefrom into a locking orientation. The radially outer end of the radial groove is positioned in a range of from 0 to 20% of the depth of the circumferential groove.