Irwin 10/4 Tiller Hardware AND Rudder Post -- #8This tiller hardware and rudder post were removed off of an Irwin 10 4. Chromed bronze. The tiller hardware measures 12 1 2 total length and is 3 total width. The inside diameter for a handle to be installed is 7 3 8 long x 2 1 8 wide. There is a 2 bolt holes that are 1 2 diameter for securing handle to hardware. The rudder post is 2 3 4 diameter the square insert is 1 1 2 x 1 1 2 x 1 1 4 long. It is 8 7 8 total length. This is very heavy duty