... Detailed Product Description we have different size of bio ball:32mm,42mm,48mm,26mm,36mm,46mm,56mm,76mm32mm bio- ... :750pcs/bag26mm bio-ball(sponge inside)quantity:4000pcs/bag36mm bio-ball(sponge inside)quantity:1500pcs/bag46mm bio-ball(sponge inside)quantity: ... 800pcs/bag56mm bio-ball(sponge inside)quantity: ...