● Steel wire used for bag closure is detectable with standard metal detection equipment. ● Protect your product and maintain quality with these sampling bags. ● 18 oz. ● (532 ml). ● 4-1/2 in. ● W x 9 in. ● L (11.5 x 23 cm). ● 2.5 mils (.064 mm) thick. ● Box of 500.