CPR Aquatic BHCPR125TTx2 1-1/4" Thread x Thread ABS Bulkheads (Set of 2) Pack of 2 complete units 1-1/4" (1.25") High Quality ABS Bulkhead Thread x Thread (flange x stem) Fits standard schedule 40 or 80 PVC pipe & fittings; Nominal Pipe Size and Standard Pipe Thread apply to inside; outside threads are not standard PT Look for the CPR UPC label. Don't accept imitations