Forespar Marelon 251 Series Mushroom Head Thru Hull Connectors - BSP (1) Size:1-1/4" BSP It also has:

It also has:

Brass electrical contacts

Ready-to-use (no mixing required)

and other viscous products

Versatile head fittings

Forespar Marelon 251 Series Mushroom Head Thru Hull Connectors - BSP (1) Size:1-1/4" BSP It also has:*** 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.