stealth press retractable cord cup

Recessed cup to recess in hole on stealth press arm for cleaner look. Its easy to install, secure the cord so theirs no tension on the cord, then remove the knot that's holding the keyring. Slide the cord through the cup and ti a few knots and pull the cord still the knots are inside the cup then install the cup on the arm and secure the arm to the linear rail. makes for a nice clean look.