Your pump outlet is 1½-inch BSP but the hose you've got clamped on is 32 mm barb. Or you're trying to thread a line into a bilge pump port and nothing lines up. This TruDesigns polymer adapter bridges the gap – 1½-inch BSP male on one end, 1¼-inch (32 mm) barb on the other. Drop it in, tighten, done. Polymer construction keeps it light and corrosion-free in salt water. Barbed connectors can be trimmed off if you need a clean threaded connection instead
| brand | JAYCAR (TruDesigns) |
| material | Polymer |
| male_thread | 1½ inch BSP Male |
| barb_size | 1¼ inch (32 mm) |
| application | Marine plumbing, bilge pump, sea water routing |
| category | Marine Plumbing |