Amazon.com: EDGELEC 100pcs 3mm White Blinking LED Diodes 1.5Hz Flash (Single Color Flashing) Clear Round Lens 29mm Lead DC 3V Blink Bulb Lamp Light Emitting Diode +100pcs Resistors (430ohm for DC 6-12V)
Amazon.com: EDGELEC 100pcs 3mm Yellow Blinking LED Diodes 1.5Hz Flash (Single Color Flashing) Clear Round Lens 29mm Lead DC 2V Blink Bulb Lamp Light Emitting Diode +100pcs Resistors (470ohm for DC 6-12V)
Super Bright Led Flasher - Electronics-Lab.com
BlinkerSign® Flashing LED Signal Ahead Sign W3-3 - Intersection Conflict Warning | TAPCO