Microplane makes the very best graters for spices, citrus zests, chocolate and other such things. They are the sharpest, easiest to use, and most durable grater of this type that we've come across.
The Slider Attachment pairs with the Professional Series Fine Grater. It protects your fingers and allows for easier grating of small items. Dishwasher safe.
Please note: this Slider Attachment does not come with a Microplane grater, even though the picture sort of makes it look like it does.