The tea strainer.
It is placed over or in a teacup to catch loose tea leaves then removed along with the spent tea leaves.
It comes as two pieces,
one on the top & one in
the bottom.
Available in 2 sizes,
small & large.
large: 19 x 9 , 17 x 7,5
Small: 16 x 7.5 , 12.5 x 5.5