Ｂクラス

noun, noun which may take the genitive case particle 'no'

B class; B grade; second rate

Used to describe something of lower quality or rank, often in contrast to A class. Can be used literally for grading systems or figuratively for quality.

• この映えい画がはＢクラスの作さく品ひんだ。

  This movie is a B-grade production.

• 彼かれはＢクラスの選せん手しゅだが、努ど力りょくでＡクラスに上あがった。

  He was a B-class player, but through effort he moved up to A class.