Features: Insulation And Flame-Retardant Material: The plastic jacket is made of high-quality materials, with flame-retardant insulation characteristics, high conservation level, and good usability Copper Tin Plated Terminal Block: The terminal block is made of high-quality copper with good conductivity, and the surface is coated with tin technology, which is bright and beautiful. Easy Identification: With three different colors (red, blue, yellow) as well as a detailed chart for easy identification or for different purposes of use. Easy to Classify: Multi size connectors in separate compartments, helps keep all the pieces organized, classify easily. High Quality: high temperature resistance, aging resistance, easy plugging and unplugging, difficult deformation, good electrical conductivity, long service life and safe insulation. Plastic box packaging for easy storage. Specifications: Set Quantity: 280Pcs / 540Pcs / 840Pcs / 1200Pcs (Optional) Included: RED for 0.5-1.5mm /AWG 22-16 BLUE for 1.5-2.5mm /AWG 16-14 YELLOW for 4-6mm /AWG 12-10 Material: ABS+ copper Package Size: 280Pcs: 17.3 * 10 * 2.1 cm / 6.81 * 3.94 * 0.83 inch 540Pcs / 840Pcs / 1200Pcs: 27.4 * 17.7 * 4.3 cm / 10.79 * 6.97 * 1.69 inch Package Weight: 280Pcs: 173g / 6.1oz 540Pcs: 593g / 20.92oz 840Pcs: 705g / 24.87oz 1200Pcs: 838g / 29.56oz Package List: 280 * Insulated Terminal / 540 * Insulated Terminal / 840 * Insulated Terminal / 1200 * Insulated Terminal