(LK250) 3 inches in diameter. Lock size is adequate for batches up to 50 gallons. Imported from Germany. These are the nicest plastic air-locks we sell. Cylinder design. Easy to clean. Rubber stopper is not included.
Customer Reviews"Great product" Review by Rich (Posted on 12/28/13)
Works well with my 150 liter tank. Made well, not a cheap Airlock. Worth the $$$
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