BRASS PLUMBING PLASTIMO HEXAGONAL PLUMBING Hexagonal thru-hull, chromed Length Thread Reference 56 mm 1/2" 52740 56 mm 3/4" 52741 56 mm 1" 52742 56 mm 1 &fract14;” 52743 56 mm 1 &fract12;" 52744 70 mm 2" 52745