1. 10 Specifications: There are 10 different specifications of insulated cable lugs in our set, which can basically meet all your application requirements. 2. Flame Retardant: The outer material of our cable lugs is PVC with good insulation, which can ensure no leakage during use and guarantee electrical safety. 3. Red Copper Core Wire: The inner core wire of the insulated cable lug is made of red copper, and the conductivity is very good. 4. Sufficient Quantity: There are a total of 102 insulated cable lugs in the set, which can meet your needs for a large number of applications. 5. Storage Box: The insulated cable lugs are packed in sturdy, practical, and resealable plastic storage boxes that cannot be lost due to improper storage. Specifications Item Type: Insulated Ring Terminal Material: PVC and Red Copper Working Frequency: High Frequency Features: Good Conductivity, Durable Scope of Application: Electrical Engineering Specifications: RV1.25, RV2, RV3.5, RV5.5 Size: RV1.25-3#4 approx. 3.2mm/0.13in RV1.25-4#8 approx. 4.3mm/0.17in RV1.25-5#10 approx. 5.3mm/0.21in RV2-5#10 approx. 5.3mm/0.21in RV2-6 1/4 approx. 6.5mm/0.26in RV3.5-4#8 approx. 4.3mm/0.17in RV3.5-5#10 approx. 5.3mm/0.21in RV5.5-4#8 approx. 4.3mm/0.17in RV5.5-6 1/4 approx. 6.5mm/0.26in RV5.5-8 5/16 approx. 8.4mm/0.33in Suitable Wire Range: AWG 22 - 10 / 0.5 - 6 mm²