Code point
U+21CF
Glyph appearance depends on your fonts.
U+21CF
Sm21D2 0338U+21CF RIGHTWARDS DOUBLE ARROW WITH STROKE is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Arrows block.
Choose the representation you need, then copy its value.
U+21CF
8655
⇏
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E2 87 8F
21CF
000021CF
%E2%87%8F
\u21CF
\u21CF
\u21CF
\21CF