The sulfurous Max 25-foot propane or natural gas extension/appliance hose is 350 rated and is UL/CSA catalogued. Industry definitive 1/4-inch masculine x 1/4-inch distaff Ball Seat Pipe Swivel all brass fittings. bully with a in breadth variety of products including all sulfurous Max torches and most else weed burner torches. Also as an extension hose for man-portable propane appliances like grills, turkey fryers, and lots of else camping/RV equipment. Although the hose is rated for natural gas, collectable to the relatively gnomish diameter of the hose and low-toned pressure of natural gas, this used can single be for relatively gnomish appliances requiring less than 40,000 BTU.