1Practical Use: Ideal for full core wires or stranded wires that are hard to crimp, ensuring firm connection as well. 2Broad Utility: Can be widely applied in machinery, equipment, electricity, transportation, home appliance and so on. 3Safer Working: The insulated ferrules enable no electric leakage for safer working, efficient, useful and reliable. 4Good Material: Using high quality copper material with good electrical conductivity, very durable for long term use. 5Easy to Install: Light in weight and compact in size, the convenient installation can be quickly finished in minutes. 50 x Ring Terminal Item Type: Ring TerminalModel: RV 3.5-4Material: Copper + PVCColour: BlackApplicable Wires: 2.5-4mm (AWG 14-12)Maximum Current: 37AApplicable Crimping Tool: HX-30J AN-30J AP-30J FSB-054YJParameter: Model Screw Hole Dia(Approx.) US Stud Size d2(Approx.) W(Approx.) F(Approx.) L(Approx.) H(Approx.) d1(Approx.) D(Approx.) T(Approx.) RV 3.5-4 4mm / 0.16in #8 4.3mm / 0.17in 8.0mm / 0.31in 7.7mm / 0.3in 24.7mm / 0.97in 13.0mm / 0.51in 3.0mm / 0.12in 6.2mm / 0.24in 1.0mm / 0.04in