From Lang Percussion web page:

Three Way Tensioning™ : Adjustments are made from the top of the drum with a special three way tuning key which permanently mounts on the shell. Tune top head alone, bottom head alone or both heads at the same time without taking the drum off the stand.

Perfect Snare Control: The snare strainer flips off with out any noise since there are no springs or rods to malfunction.

Fingertip Tone Control: The muffler knob has a numbered gauge to obtain the exact degree of muffling required.

Finish: All Gladstone Drums are lacquered on the inside with the same high quality lacquer used on the outside.