Features:This is an essential kit specially designed for Raspberry Pi 1 B+ / 2 B / 3 B.T-type expansion board and breadboard makes the experiment more convenient.Connect to sensors and electrical component through GPIO expansion board.The breadboard with self-adhesive tape on the back, it easy to stick.Comes with a 40 pin GPIO cable and 65 pcs jump cables and a 630 tie points breadboard.Specifications:Package weight: 164gT-type GPIO Expansion Board:Scope of application: For Raspberry Pi 1 B+ / 2 B / 3 B External connection to for Raspberry Pi via GPIO port, applicable to breadboard experiment.T-type expansion board size: 7.4 * 5.9 * 2cmGPIO Cable:Cable length: 20cmBreadboard:Tie points: 630 pcs tie pointsTwo distribution strips: 200 pcs tie pointsProduct Size: 5.6x16.5x0.85 (cm)Plastic parts: ABSWeight: 89g / pcsUses: experiment, testContacts are phosphor bronze with plated nickel finish, rated for 50,000 insertion cycles. Features: Recyclable, environmentally friendly recycling. Structure and color is clear, easy to use. Bread board can be assembled by a fixed unit.Jumper Cables:10.5cm: 7 kinds of colors, 7 pcs per color14cm: 4 kinds of colors, 2 pcs per color (Random Color)18.5cm: 4 kinds of colors, 1 pcs per color (Random Color)22.5cm: 4 kinds of colors, 1 pcs per color (Random Color)Wire diameter: 0.8mmPackage List:1 x T-type GPIO Expansion Board1 x GPIO Cable1 x Breadboard65 x Jumper CableNote: 1. Due to manual measurement, please allow 1 ~ 3 cm error, thank you.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. Please understand, thank you!