Tsurikawa rings were originally hand straps for people to hang on to when riding the bus or subway trains in Japan. These rings were stolen from trains by young Japanese gangsters, also known as Bosozokus, and hung from their car's rear bumper. It eventually became a sign of rebellion.
Hang it either inside or outside your car, and remember, the lower it drags on the ground, the cooler it looks!
The ring is rigid PVC, the fastener is PVC, and the strap is nylon.
Use a screwdriver to install it.
Please don't use it as a tow hook, but you can try to hold on to it while your friend drives your car, no problem. Have fun!
