19pcs PCB Board: -Hole-pitch: 2.54 mm / 0.1 inches -Material: glass fiber FR4 -Dimension: 4x6(4pcs)/ 3x7(4pcs)/ 4x(4pcs)/ 5x7(4pcs)/ 7x9 (2pcs)/ 8x12CM(1pcs) 26pcs 2.54mm 40pin Header Connector: -Type of Connector: 10pcs 40 pin male header + 10pcs 40 pin female header + 3pcs 40 pin pitch right angle male headers + 3pcs 2x 40 pin Strip Dual Male Header -Quany: 26 pieces in total of 4 different types 600pcs Resistor: -Relative parameters: ±1% tolerance, 1/4w, metal film lead free and RoHS compliant -Value: 10Ω, 22Ω, 47Ω 100Ω, 150Ω, 200Ω, 220Ω, 270Ω, 330Ω, 470Ω, 510Ω, 680Ω, 1KΩ, 2KΩ, 2.2KΩ, 3.3KΩ, 4.7KΩ, 5.1KΩ, 6.8KΩ, 10KΩ, 20KΩ, 47KΩ, 51KΩ, 68KΩ, 100KΩ, 220KΩ, 300KΩ, 470KΩ, 680KΩ, 1MΩ, 20pcs each. 15pcs 5mm Screw Terminal Blocks: -Material : ABS Plastic -Rated voltage: 300V -Rated current: 16A -For wire size: 14-22AWG -Pin number: 2 Pin(10pcs) and 3 Pin (5pcs) 50pcs Led Diodes: -Emitting Color: White/Red/Green/Blue/Yellow -Forward Voltage / Current: W/G/B/:3V-3.2V R/O/Y:2V-2.2V | 20mA -Quany: 50pcs in total, 10pcs each color 12pcs Tactile Switch with Button Cap: -2pcs 12*12*7.3 Push Button Switch with Blue Cap -2pcs 12*12*7.3 Push Button Switch with Red Cap -2pcs 12*12*7.3 Push Button Switch with Green Cap -2pcs 12*12*7.3 Push Button Switch with Yellow Cap -2pcs 12*12*7.3 Push Button Switch witch Black Cap -2pcs 12*12*7.3 Push Button Switch with White Cap Package Included: -600pcs Resistor -19pcs PCB Board -50pcs Led Diodes -26pcs Header Connector -15pcs Screw Terminal Blocks -12pcs Tactile Switch with Button Cap