6 switch machines per pack Compact 1-1/8" (28.5mm) diameter x 1" (25mm) height Easy to install on existing layouts Museum-quality switch stands with rotating targets Racor 17B (tall), 31B (tall) and 20C (low) switch stands ALL included Momentary 12V DC power - power numerous machines off of one power supply Strong enough to throw and hold the points but it won't break them SPDT auxiliary contacts to power frogs and signals Low-profile, compact design Work with all layout types, including multi-deck and portable layouts