1/8" (3.2mm) x 3/16" (4.76mm) oil reservoir flanged axle "oilite" bushings. 

These high tech bushings are made in the USA and use the best quality SAE-grade oil-impregnated self-lubricating sintered bearing bronze material. The sintering process to make these bushings creates microscopic voids when the material is pressed in the mold that is then impregnated with oil in a vacuum displacement process. This oil is held in suspension until the bushing becomes warm from operation, releasing the lubricant on demand. These bushings are also made with a unique stepped inside bore that is designed to hold applied lubricants with the surface tension on the lube between the bushing wall and the axle which can then feed the bushing land for further reduction in parasitic drag and friction.

The axle bore in these bushings is manufactured to high precision tolerances and is a superb fit to the 1/8" axle. And finally, a speed ring is incorporated on the face of the bushing to reduce friction associated with rotating components thrust against the bushing surface.

These bushings allow you to install a 1/8" axle where a 3/32" axle was previously used, because its 3/16" outer diameter is that typically used on bushings for 3/32" axles. This comes in handy at times when combining vintage and modern components in a car build.