1E1 150mm electroplated diamond wheel" combines a wheel shape code (1E1), a diameter (150 mm), and an electroplated diamond abrasive layer. Here’s what each part means and why this wheel is useful for cast-iron profile grinding and sharpening.

1E1: Shape/code for the wheel/profile. Depending on supplier standards, 1E1 typically denotes a single-cup, single-sided or a specific cup/face configuration used for profiling or surface work. (Confirm exact geometry with the manufacturer—shape codes vary.)
150 mm: Outside diameter of the wheel (about 6 inches).
Electroplated diamond: A single layer of synthetic diamond grit is bonded directly to the metal wheel body using electroplating (nickel or similar). The diamonds form a monolayer (exposed grains) rather than a matrix-bonded bed.
Why electroplated diamond for cast iron profile grinding and sharpening