Materials: A. BOOT : PVC B. MIDDLE HOOD : ABS C. METAL PART : COPPER , NICKEL PLATED D. INSULATOR : PC E. PIN CONTACT : COPPER , SILVER SPECIFICATIONS: 1. RATION : 100V AC 1A MAX or 12V DC 2A MAX. 2. INSULATION RESISTANCE : 50M OHM MIN at 250V DC. 3. DIELECTRIC STRENGTH : 250 V AC / 1 MINUTE. 4. CONTACT RESISTANCE : 30M OHM MAX. 5. INSERTION FORCE : 4.5KG MAX. 6. WITHDRAWAL FORCE : 09.KG~3KG.