The wire ends are made of high-quality copper material with tin-plated surface, which has excellent conductivity and oxidation resistance; the ferrule crimping sheath is made of PVC insulation material, which is comfortable to the touch and durable. Use a crimping tool to easily crimp the ferrule and secure the ferrule to the end of the cable. For connecting machines to HMI, PLC and power supplies, speakers or other electronic devices. All ferrule connectors are stored in transparent and sturdy storage boxes with compartments. The ferrule connector set is stored individually, well organized, and easy to carry and find. No mess during transportation and easy to use. The specific specifications are as follows: 22AWG, 0.5mm²; 20AWG, 0.75mm²; 18AWG, 1.0mm²; 16AWG, 1.5mm²; 14AWG, 2.5mm²; Suitable for conductor assembly, wiring and deep processing, and has good uses in electrical systems, machinery, and electricity. Suitable for electrical control distribution, power electronics, relay protection, distribution cabinets, machine tool equipment, etc., helping to achieve safe and professional connections. Colour:As Shown Material:Plastic+Copper Package Contents: 680 x red terminals (200PCS TE0508, 160PCS TE7508, 160PCS TE1008, 100PCS TE1508, 60PCS TE2508) 680 x yellow terminals (200PCS TE0510, 160PCS TE7510, 160PCS TE1010, 100PCS TE1510, 60PCS TE2510) 640 x blue terminals (200PCS TE0512, 160PCS TE7512, 120PCS TE1012, 100PCS TE1512, 60PCS TE2512)