Specification:
Material: plastic + metal
Color: Black
Type: Square, Round
Product size: 600mm*20mm*10mm/23.62*0.78*0.39''
Net weight: Square: 28g; Round: 25g
Gross weight: Square: 28g; Round: 25g

Using Method:
Put the key ring on the belt, the key on the key ring, and stretch it out to open the door when using.
Let go when not in use, automatically rebound to the waist, to avoid losing the regular key at will.

Note: do not use excessive force to pull the steel wire, which is easy to cause the problem of return spring.
Please allow 1-3mm differs due to manual measurement.
Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.