1.High quality rubber material 
2.Very suitalbe on the tank valve
3.Very comfortable as knob on tank valve
4.It can custom all kind of colors

All the good can send to you by Sea (FOB Shanghai/CIF )

Express (DHL ,FedEx ,Ups and so on)  

1.We try to do best communicate with every customer about all the questions and Promtly

2.We do double check before the products sent out 

3.We do choose the safe shipping

4.we do make sure you can get the products on time

5.we do follow up after you get the products