Nice to have a packaged hydrometer and cylinder. Easy to order. Very happy with the hydrometer, however the cylinder cracked when I accidentally tapped the inside of the cylinder with the hydrometer while removing the hydrometer from the cylinder after making a measurement. Donít plan to replace with like in kind. Will replace cylinder with a diffident model from Homebrewing. Hope it is more durable. Was surprised that this cylinder cracked with the slightest tap from the hydrometer on the inside of the cylinder. Love the hydrometer. No issues with the hydrometer.