What are the advantages of using SAE 304 Stainless Steel in the AJSGH50-MAX model? SAE 304 Stainless Steel is used in our Aqua Joe Heavy Duty Garden hose to ensure resistance to kinking, temperature change, corrosion, and puncture. SAE 304 Stainless Steel is also lightweight to make for easy transport and storage. Related articles Will the AJSGH50-MAX hose be compatible with my irrigation accessories? What type of metal is used in the Aqua Joe AJSGH50? What advantages does the AJSGH50 hose using SAE 304 Stainless Steel? Is the AJSGH50 hose compatible with my irrigation accessories? What is the AJSGH50-MAX SAE 304 Stainless Steel Hose?