ASC Anvil 3/4"x5-1/2" 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 are 3/4 inch with MIP connection type. The length of the nipple is 5-1/2 inch. It is manufactured to include no more than 0.25 % weighted average lead content on wetted surfaces.