Siffar kwalba ta gargajiya a masana'antar marufi, kwalbar zagaye ta Boston (wanda kuma aka sani da kwalbar Winchester), tana iya ɗaukar kusan kowace ruwa ko tauri.

Kwalaben gilashin Boston Round masu launuka iri-iri da ƙarfinsu. Akwatin ANT yana ɗauke da nau'ikan kwalaben gilashin Boston Round da yawa. Kuna iya siyan kwalaben Boston marasa komai a farashin jimilla kuma ku ji daɗin jigilar kaya cikin sauri.

Waɗannan kwalaben gilashin Boston masu launin ruwan kasa suna da kyau don marufi na kwalliya, marufi mai mahimmanci, kwantena na ruwa da kuma na'urar rarraba sabulu. Akwai murfi na kwalba, digo da na'urorin tacewa. Kawai zaɓi murfi da famfo mai dacewa.