Connector Jack DC Female 2.1x5.5mm Quick Wire Connector

Pimoroni Fan is the best you can do for your new Raspberry 4! It is a well known fact, Raspberries can get hot. Even though, there are plenty of solutions to that, you will find no better than this Pimoroni Fan. It is a no-solder device, hence you can put it on and off as you wish

Alligator clip connectors Red and  Black.

It has an automatic voltage regulator, which for practical purposes results in quieter operation and less vibrations.
Characteristic:
- Minimum operating voltage: 8 V
- Maximum operating voltage: 45 V
- Maximum current: ± 2.5 A (24V, adequately ventilated or refrigerated)
- Logic voltage: 3 V / 5.5V
- Microstep resolution: full, 1/2, 1/4, 1/8 , 1/16, 1/32
- Factory soldered temples
- 4-layer PCB, 2 oz. Copper for improved heat dissipation
- Short-circuit and overtemperature protection - Use potentiometer to adjust the current
- Measurements: 20x16x12 mm

Silicone Thermal Paste Syringe 25g features:
- Density at 20°C: 2.58 G/cm3
- Flashpoints: 350°C
- Freezing point: -50°C
- Coefficient of refraction: 1.405,
- Specific temperature at 50°C: 0.243 Cal/g K
- Co-efficient global heat transfer at 0-150°C: 0.78 W/m K
- Constant dielectric at 100 Hz: 4.7 (± 0.1)
- Cross resistance: 5 x 10 to the power 14 Ohm x cm
- Loss rate at f = 100 Hz: 0.020 (± 0.003)
- Range of operating temperature: -50~200°C

10x Strip 8 Pin Female Short features:
- Pin spacing: 2.54mm
- Insert position: Vertical
- Insert: Through
- Quantity: 10 units of strips of 8 female pins each

CNC shield for arduino works as a controller for CNC type milling machines,
3D printers, laser cutters .
CNC Shield Expansion Plate V3 Engraver 3D Printer features:

• 4 compatible sockets for use of A4988 stepper motor controllers (PAP), DRV8825, other compatible
• 4 support axes X, Y, Z, A
• 2 limit switches for each axis (6 in total)

5x Female Strip 20 Short Pins features:
- Pin spacing: 2.54mm
- Insert position: Vertical
- Insert: Pasante
- Quantity: 5 units of strips of 20 female pins each

Red Laser Cross Module 650nm 5mW Head Point Adjustable Focal Length features:
- Type: red laser diode
- Type of laser: cross
- Adjustable Focus
- Wavelength: 650nm
- Output power: 5mW
- Operating voltage: 4.5-5V
- Operating intensity: <40mA
- Operating temperature: -30ºC to 60ºC
- Dimensions of the emitter: Φ12x35mm
- Cable length: 130mm