*Material:resin, ABS
* Short Style Size:10*5.5*3.5cm
* Long Style Size:11*6.5*3.5cm .
* Ring Size:48mm*45mm*51mm*54mm
* One set includes:  1*cage +4 different size ring+2 keys
* Weight:Net weight is about 120g
*Color: Green/Pink/Clear/Skin/bluestone blue

When you want take it off, insert the key, rotate it, and pull out the lock and key together,then take off the cage and ring
CAUTTION: PLEASE LOCK OR UNLOCK GENTLY IN CASE OF TWISTING OFF THE KEY!
The lock and key are both made from brass and key is silver plated surface. As brass hardness is not high, brass key could be snapped if it's forced to take off with big man power. Thus it's important to take key off gently.
If you feel uncomfortable during use, please stop using it immediately