TASK-LINE pipeline fluid blockers (line blockers) are molded to size, 1" through 6" (other sizes available upon request) in class 150# ANSI dimensions with a nominal thickness of ⅛°" Installation and removal are a snap with its integral molded paddle handle. The handle extends 2" above the flange and has a pre-drilled 3/8" hole for tagging (while in service) or hanging (while in storage).