Detail 01
16 in. head, 20 in. depth
The depth is what makes the note long and low. A shallower shell would sound tighter and higher.

Independent shopping perspective
A 16 in. by 20 in. surdo in silver. The low drum in a samba bateria, for players in Brazilian percussion groups.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
The depth is what makes the note long and low. A shallower shell would sound tighter and higher.
Detail 02
The bass drum of a samba bateria. It sets the pulse the rest of the section plays against.
Detail 03
Metal-look shell. Read it as a durable outer surface for a drum that gets carried and knocked.
Detail 04
Surdos are typically worn on a strap for parade play or set on a stand when seated.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
A surdo is struck with a mallet in one hand while the other hand mutes the head. That muting is what shapes the note.
No strap or mallet is included. Plan on both if you will carry it.
Baterias use several surdo sizes tuned to different pitches. A 16 in. sits in the higher end of the surdo range, often the marking or answering voice.
It is built as a surdo, so the tuning range and mounting are different. It will make a low note, but a floor tom is the right tool for a kit.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.