Supertech valve spring shim, 1.140 in outside diameter, 0.570 in inside diameter, 0.030 in thick. Supplied as a replacement valve spring shim sized to those exact dimensions, it’s intended for valve train shim replacement where that specification is required. The listing notes drop-ship only handling as provided in the source description.
Supertech Valve Spring Shim 1.140in OD .570in ID .030in Thick (Drop Ship Only)