Material: made of environment-friendly PC, pure copper nickel plated blade, slotted, more conductive, more stable, not easy to loose, stable transmission.Applicability: UY/K1 connector, applicable wire diameter: 0.4mm-0.7mm / AWG 21-26. UY2/K2 connector, applicable wire diameter: 0.4mm-0.9mm / AWG 21-26. UR/K 3 connector, applicable wire diameter is 0.4-0.9mm / AWG 21-26.High quality: bright, transparent, better insulation, heat resistance and impact resistance. The interior design of gel fills provides an airtight environment for conductors to prevent dampness and dustproof of telephone lines or data lines.Easy to use: The connection can be completed by crimping, which is convenient and fast. Terminals are usually used to connect phones, network cables and low-power, small-diameter, medium-sized devices.Package includes: 150 connectors (K1: 50pcs, K2: 50pcs, K3: 50pcs) Specification: UY connector: Material: plastic shell, pure copper blade, filled with gel inside Applicable wire diameter: 0.4mm-0.7mm / AWG 21- 26 Color: orange yellow, transparent UY2 connector: Material: plastic shell, pure copper nickel-plated blade, filled with gel inside Suitable wire diameter: 0.4mm-0.9mm / AWG 19-26 Color: orange, transparent UR connector: Material: plastic shell, pure copper nickel-plated blade, filled with gel inside Suitable wire diameter: 0.4mm-0.9mm / AWG 19- 26 Color: orange-red, transparent The package includes: 150 connectors (K1: 50, K2: 50, K3: 50)