The dual door flapper caps (fine and big holes) are a great choice for containing products that need to be dispensed in smaller doses. To dispense the product either one of the hinged flaps is flipped up, the product is dispensed through the small or big holes, and then the cap is re-sealed by simply pressing the flap back onto the beaded finish. This 53-485 red polypropylene (PP) plastic dual flip-top dispensing cap has two snap closures - one side has fine holes (.100 inch orifice) for less product dispensing, and other side has 3 relatively bigger holes (.300 inch orifice) for large yet controlled dispensing, crab claw sealing mechanism, and smooth outside round skirt. These dual snap-top caps are a great choice for dispensing dry food ingredients such as herbs and spices. This cap includes a pressure-sensitive foam liner PS113. The liner is designed to be used as an inner seal for dry products. Note: Pressure sensitive liners provide an extra level of protection in that it actually creates a seal that sticks to the rim of the bottle.