BSP (British Standard Pipe) Thread Data:
1/8" BSP = 9.7MM O/S Diameter
1/4" BSP = 13.2MM O/S Diameter
3/8" BSP = 16.7MM O/S Diameter
1/2" BSP = 21MM O/S Diameter
Postage only applies to UK mainland
Orders will be dispatched via Royal Mail 2nd class delivery
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