High quality, durable 140 Piece, 22 AWG U-shaped preformed copper jumper wire kit, 14 sizes with seven different wire colors. The kit comes with a free plastic case to keep wires organized. These will work with any breadboard; you can also solder these jumper wires. Wire stiffness is similar to that of a resistor lead. These are not the cheap jumper wires that pop out of your breadboard; they are good-quality jumper wires. Package includes 10 of each of the following lengths: 125 mm, 100 mm, 75 mm, 50 mm, 25 mm, 22 mm, 20 mm, 17 mm, 15 mm, 12 mm, 10 mm, 7 mm, 5 mm, 2 mm. Made in China.