ASC Anvil 2"x4-1/2" Galvanized Nipple. It is made of welded steel with a hot dipped galvanized finish, meeting ASTM A/53 standards. Standard Schedule 40 nipple. Fitting sizes 1 and 2 of 2 inch MIP. The length of the nipple is 4-1/2 inch. Manufactured to include no more than 0.25 % weighted average lead content on wetted surfaces.