Standard 6 x 6 mm tactile switches with a positive click. The legs straddle a breadboard's centre channel, which is the entire reason this size became the default.
Specifications
| Size | 6 x 6 x 5 mm |
| Type | SPST momentary, normally open |
| Rating | 50 mA at 12 V DC |
| Actuation force | 160 gf |
| Life | 100,000 cycles |
| Pack size | 20 pieces |