Yes, kinda. Both ends of one ratchet tie down has a *hook. The hook resembles an "S" but the bottom part actually continues around until it his the middle of the "S" forming a loop. The loop keeps them from detaching from the straps AND can be used hundreds of different ways.
Without damaging/cutting them, close to 1'.
Not sure what you mean by "auto retractable?" If you mean like a seat belt, No.
When you apply the hooks to two separate points, you slide the strap end into the ratchet end and start crankin' (ratcheting) and they pull from hook to hook. They pull together similar to a bungee cord, but you can adjust them to any length and are far stronger than a bungee.
Try pushing out the three taps on the back of the black box. Otherwise, cut or break the packaging.