Code point
U+21FC
Glyph appearance depends on your fonts.
U+21FC
SmU+21FC LEFT RIGHT ARROW WITH DOUBLE VERTICAL 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+21FC
8700
⇼
⇼
E2 87 BC
21FC
000021FC
%E2%87%BC
\u21FC
\u21FC
\u21FC
\21FC