Solderless SS breadboards in a 6 in One Pack with a tight metal spring under each tie point for reliable connections. The springs align precisely with the contact points to keep the 170 connections uniformly tight, improving contact stability during prototyping. Electricity flows horizontally across the board, with five insertion points on the horizontal power path designed for low resistance. Expandable design: multiple boards can be connected together to create larger prototyping layouts. The back of each breadboard features self adhesive tape for easy mounting on single sided prototyping circuit boards. Specifications: Type SYB170; hole diameter 1 mm (0.04 inches); hole pitch 2.54 mm (0.1 inches); board thickness 10 mm. Kit includes 6 boards in (black, white, green, yellow, blue, red) for easy color coding, each board providing 170 pins. Electrical characteristics: voltage rating up to 300 V; low current rating of less than 5 A. Compatible with 2229 AWG jumper Dupont wires. Compatibility and use with common components: compatible with Raspberry Pi and Arduino projects, as well as LED diodes, screw terminals, Dupont wires, connectors, capacitors, resistors, ICs, DIP packages, sensors, transistors and other power components or devices. Practical applications: suitable for computer science classes, hobbyist experiments, and pointtopoint prototyping projects.