XinXu Pepper Grinder Set,Gravity Electric Salt And Pepper Mill Grinder Set Stainless Steel Automatic Pepper Mill,Battery-Operated With Adjustable Coarseness,Blue LED Light,One Hand Operated(2 Pack)

Q: Does the salt and pepper come with this purchase?

Salt and pepper does not come with this item. You can purchase any salt pepper or spice to fill these. You can even use medleys or spice mixes to season your food.

Q: What are the two black arrow marks for

Where u line up arrows to screw on for batteries.

Q: How much do they hold, what is the capacity of each?

They hold about a half cup of each. I refill the grinders about once ever 4-6 weeks. I love them. I have a set and have given four sets away as gifts.