Detail 01
4/4 size
Fits full-size cellos only. Smaller student instruments need shorter strings; a 4/4 string on a 3/4 wastes winding length.

Independent shopping perspective
Single D string for a full-size cello, medium gauge. A replacement for a broken or worn D on a Prelude set, or for student instruments generally.

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
Fits full-size cellos only. Smaller student instruments need shorter strings; a 4/4 string on a 3/4 wastes winding length.
Detail 02
Standard tension. Balanced feel under the left hand and the safest default if you do not know what was on the cello.
Detail 03
One string, not a set. The other three stay as they are, so tone may not match if the rest are older.
Detail 04
D'Addario's student-tier cello string. Built for durability and tuning stability rather than tonal depth.
Detail 05
Holds pitch quickly after installation and resists humidity swings better than gut. Brighter and more direct than warmer core types.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
No. This is cut for 4/4 scale length. A 3/4 cello needs a 3/4 string or the winding will sit in the wrong place at the peg and nut.
Steel-core strings stretch far less than synthetic. Expect it to hold pitch within a day of normal playing, with a few retunings on the first day.
Not for a break. But if the other three are over a year old, the new D will sound noticeably brighter and louder than its neighbors.
Medium. It is the standard reference tension and works with the setup most student cellos ship with.