Forespar Marelon 251 Series Mushroom Head Thru Hull Connectors - BSP UOM (PN#):Piece (901028) It works on all metals

It works on all metals

In addition to being the best way to get rid of black streaks

Quickly removes stains from water line

s unique formulation of solvent carrier and paraffin wax coating was engineered to penetrate crevices deeply

providing rapid results

Forespar Marelon 251 Series Mushroom Head Thru Hull Connectors - BSP UOM (PN#):Piece (901028) It works on all metals*** use Option (1) to select Size *** Forespar Marelon 251 Series mushroom head thru hull connectors are precision moulded in high strength Marelon. Their great strength, light weight and complete freedom from corrosion and electrolysis make them the ideal thru hull for use above and below waterline. Forespar recommend a maximum torque setting of 27 Nm (20 lb ft) for Series 250, Series 251 and Series 253 thru hull connectors.