1 cup of fine emery
This emery is even finer in grade than the last the type sold last year.
Emery is used to keep pins and needles sharp. Create a tiny little pin cushion (traditionally a strawberry) to accompany your larger pin cushion. Insert pins and needles into the strawberry before placing them into your regular pin cushion. This will help to keep them sharp.
I have researched the cost of these on Amazon. One cup of emery alone is about $16 and the single cup of walnut shells is about $13. So, getting both for just $12 is real good deal. If you need more emery, order SET TWO which has double the amount.