Bronze Bushing with Flange 1-3/4 O.D X 1-1/2 I.D x1-1/2 long Brass with a 3/16 thick x 2.06 O.D flange This is a phosphorus Bronze with 89% cu and 11% sn it is porous to hold oil in the material and use it to lubricate the joint. Oillite is a trade name this, material is similar but not made by that company. The exact size is in the first two pics