I've only used it for abut a half hour but operates as it should. It took months to get it but that's because the threat of tariffs on China and not this companies fault. The customer service was excellent. I always got a response within 12 hours. Amy Zhang was an incredible represetative and I'll buy from this company again just because of her. I'll update this review after I can put some hours on the Cyliner. The package it came in was pretty beat up but the cylinder was fine. It was wrapped in a lot of bubble wrap and well protected for such a  sturdy item. Fits my H12R perfectly. I just noticed the price dropped. I paid $246 total and the day after it was delivered the price dropped to $180. Slightly irritated by that. Delivery： Delayed due to Tariff threat. Added a couple months to the deliver time. but I was kept informed on the status.

great company to work with, easy shipping and order process