Choose to have the set or one or the other.  But who doesn't love a matching set...? 
 
Hang the diffuser where you would like, in your car, the bathroom, bedroom, anywhere. 
Remove the seal, soak the cork and have a long lasting scent. 
 
Also, have the choice of a black or gold diffusser. 
 
WARNING: 
Keep out of reach from children and pets. Avoid contact with skin. Consult a doctor is any irritation occurs. Remove from car during periods of hot weather.