Amazon.co.jp: 5pcs PB05A 7mm ON-OFF 2Pin Latch Self-Locking SPST Normal Open Mini Push Button Switch DIY (Color: 5pcs Red) : Industrial & Scientific
Twidec/10Pcs 1A 250V AC 2 Pins SPST Black Normal Open Mini Momentary Push Button Switch with Pre-soldered Wires PBS-110-XBK: Amazon.com: Industrial & Scientific