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REES52 30 Pcs Double Sided PCB Board Prototype 4 Sizes Kit with 60 Pcs Led Diodes, 20 Pcs Male Header Connector and 40 Pcs F/F Jumper Wire (Bonus: 10 Pcs 2P & 3P Screw Terminal Blocks and 15 Pcs Tactile Cap Switch) PCB Board 30 Pieces in 4 different sizes, a good assortment to meet your design demands such as electronic experiments and DIY projects. Easy to use: pre-tinned plated holes on the board make it very handy to solder components and sensors for your projects. Easy installation: 4 mounting holes at the corners of the board are very convenient for installing them together. Material: high quality glass fiber FR4 Hole-pitch: 2.54 mm LED Diodes View angle: 15-30 Degree Head type: round 3mm Led forward voltage: red 2.1-2.4V; yellow 1.8-2.4V; whiteue/green 3.0-3.2V Max. current: 20 mA Header Connector Pitch: 2.54mm, number of pins: 40pin. Type of row: single row, type of connector: straight. Great tool for Arduino proto shield. Screw Terminal Block Pitch: 5.08mm, 5.08-301-2P, 5.08-301-3P Rated voltage: 300V, rated current: 16A Dupont wire Length: about 20cm Size: 0.127mm, single root Pitch: 2.54mm headers and sockets Tactile Cap Switch Tactile switch with button cap Package include 2x8cm Prototype PCB universal board * 10 3x7cm Prototype PCB universal board * 10 4x6cm Prototype PCB universal board * 5 5x7cm Prototype PCB universal board * 5 40-Pin male header connector * 10 40-Pin pitch right angle male headers * 10 3mm Light emitting diodes * 60 Female to female jumper wire * 40 5.08-301-2P * 5 5.08-301-3P * 5 Tactile cap switch * 15