A004-0304 - 3x4x0.1mm SHIM (20pcs)
Stainless steel shim with an inner diameter of 3 mm, outer diameter of 4 mm, and thickness of 0.1 mm.
The outer diameter is smaller than that of a standard shim while maintaining an inner diameter of 3 mm, allowing you to make adjustments to the clearance of shafts and other parts that were previously not possible.