Listed are various styles of Radius curved and Traditional conga Counter Hoop Rims found in modern manufacturing.
Referring to the Counter Hoop Rim Style Chart, determine which counterhoop shape best matches your particular counterhoop.
Measure the ID and OD dimensions of the counterhoop in 'inches'.
The cut and front views of each hoop style in the diagrams below, show how the counterhoop works and fits with Remo's Symmetry Conga drumhead.





ADDITIONAL INFO: MEASURE DRUM BEARING EDGE
Although the manufacture’s stated catalog drum size is good to know it is not crucial to determine which drumhead crown size to use.
The counter hoop measurements are the most important especially if the drum make and model are older versions or an unknown brand.
The drum size at the bearing edge is difficult to measure accurately as it has a rounded edge with no reference point to start or end. You can use a tape measure to get an approximate size which will help to identify the head size range. With the above variations in mind it is best to remove and measure your counterhoop(s).

Once you have all this information contact the Remo Customer Support Team and SUBMIT REQUEST with your detailed information. If possible send a photo of your drum. You will get a response with advice on the best type and size conga head to purchase for your Drum.
These codes indicate the inner diameter (ID) of the aluminum ring, which determines how the head fits inside the drum’s counter hoop. D1 = smallest fit, D4 = largest fit The crown size (playing surface) stays the same—only the ID changes to match various drum brands.
Why doesn't my Fiberskyn say Fiberskyn 3? The trademark is officially 'FIBERSKYN®'. During our periodic updates with our imprints and keeping in-line with our trademark registration, all current Remo production of Fiberskyn products have the logo without the number '3'
What's the difference between Fiberskyn, Nuskyn and Skyndeep? FIBERSKYN® provides a superb, authentic drum sound for maximum projection, lively overtones, and slap tones that are easy on your hands. It is the brightest sound of all three Remo film technologies. With superior construction, the low maintenance, weather resistant FIBERSKYN drumheads will enhance your drumming experience. In fact, they are the world’s most widely recorded synthetic world percussion drumheads and are used by most top-professional drummers in the world. It produces ultimate volume with overtones drummers love, and controlled by muting with their hands. LIVELY OVERTONES EASY TO PLAY BRIGHT MID-RANGE TONES NUSKYN® sounds natural, warm, and full-bodied with enhanced low and mid-range frequencies, without any lingering high pitched overtones. NUSKYN® resembles the performance of an animal skin expanding the sound response spectrum dramatically. This means heavy hitting drummers that are accustomed to playing the animal skin will get that same response needing to pull the tone and volume out of the drum. "You know who you are. Manos de Piedra." QUICK DECAY OVERTONES SOUNDS LOOKS & FEELS LIKE ANIMAL SKIN ENHANCED LOW AND MID-RANGE FREQUENCIES SKYNDEEP® is the graphic infusion of pigment into a polyester surface making it uniquely attractive while maintaining the integrity of a great sounding drumhead. SKYNDEEP is weather resistant, producing warm mid-range tones, increases sound, volume and projection similar to the FIBERSKYN without the added fiber layer. This is all around the friendliest drumhead film for hand drummers that want a traditional sound and lifesaving hand care. Playing Skyndeep, you’ll notice your hand velocity is less than playing Nuskyn. This film technology is also very durable during transportation and from the occasional scrapes and bumps. CONTROLLED OVERTONES GRAPHIC IMAGE INCREASED SOUND, VOLUME & PROJECTION WARM MID-RANGE TONE