Threadolet Butt Weld NPT Class 3000, Class 6000, Class 9000 Connection Butt Weld x Threaded Carbon Steel ASTM A105, Stainless Steel ASTM A182 F304/F304L, ASTM A182 F316/F316L, Zinc Plated and Hot Dip Galvanized, Run Size 1/2 Inch - 48 Inch x Branch Size 1/4 Inch - 4 Inch