This Hypro-AR 9910-KIT1723 Diaphragm Repair Kit is the perfect solution for your D252 and D19 pump models. The kit includes high-quality Desmopan diaphragms to ensure the long-lasting and efficient performance of your pump. The brand Hypro-AR is known for their reliability and durability, so you can trust this repair kit to be the perfect fit for your pump. This kit is ideal for those in the business and industrial sectors looking to maintain their pumps and avoid costly replacements.