E27  lamp holder
1) Plastic/Baklite Ceramic  material
2) E27
 3) Copper/iron screws shell...
Model Number: LAMP HOLDER

1-Screw shell: Iron plated white zinc
Conduction strip :Iron plated copper
Terminal: Zinc alloy
Porcelain
2-Screw shell: copper
Conduction strip: stainless steel
Terminal: copper
Porcelain
3-Screw shell: copper
Conduction strip: Iron
Terminal: copper
Porcelain
4-Screw shell: alloy plated copper
Conduction strip :Iron plated copper
Terminal: Zinc alloy
Porcelain
5-Screw shell: copper
Conduction strip :copper
Terminal:copper

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