BRASS PLUMBING PLASTIMO HEXAGONAL PLUMBING Hexagonal thru-hull Length Thread Reference 56 mm 1/2" 52718 56 mm 3/4" 52719 56 mm 1" 52720 56 mm 1 &fract14;” 52721 56 mm 1 &fract12;” 52722 65 mm 3/4'' 54623 70 mm 2" 52723