WASH BOTTLES, UNITARY, LDPE, GRADUATED, 500 ML, 12/PK, These Bottles are made of translucent and unbreakable low density polyethylene. The distinguishing feature that these bottles contain is the built-in delivery tube making it a one-piece wash bottle. These bottles are graduated on the outer surface to reflect an approximate volume of solution filled or dispensed.¿Looking for more variety, different size or a different product, visit our store!!