Solid cast bronze. Allows installation into a matched cavity molded into the hull. Spartan Marine can provide tooling plugs to match if needed. Order nuts separately when required.

3/4" Flush Thru-Hull
Stem length = 2.375"

1" Flush Thru-Hull
Stem length = 2.875

1 1/4" Flush Thru-Hull
Stem length = 2.875

1 1/2" Flush Thru-Hull
Stem length = 3.25"