Feature
1. The 5-key system guide makes for smooth combanation.
2. A one-touch lock mechanisme is used in the combanation.
3. This product has received standard certification

Material and Finish
- Shell : Zinc alloy die casting or Alumunium alloy  [Shell size 28 .32]: Chrome plating
- Insulator : Synthetic resin 
- Contact : Copper alloy and finish : Silver or Gold plating