Welcome to our shop! Here is the detailed description of our product: Features: - Breadboard is designed for electronic circuit assembly without the need for welding. - Various electronic components can be easily inserted or pulled as needed, eliminating the need for welding. - Saves circuit assembly time and allows for component reusability. - Rows and columns have corresponding letters and numbers, reducing the chance of mistakes during handling. - Perfect for electronic circuit assembly, commissioning, and training. Specifications: - Breadboard Material: ABS - Baseplate Material: Aluminum - Breadboard Color: White - Baseplate Color: Black - Two terminal strips: 1260 holes - Four distribution strips: 400 holes - Length: Approx. 21.5cm / 8.46inch - Width: Approx. 13cm / 5.11inch - Weight: Approx. 390g Package Included: - 1 x Breadboard (Jumper wire NOT included) - 3 x Terminals - 1 x Accessory Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.