grinding stone for grafite pencils

Polishing Stones FF334 4X3/8 FINE 20/PK INDIA 1/2 RND SHARP STONE. MSC# 54492210 Ability One (01919059) In Stock. Price: $217.24 (1) 20 Pack. Add to Cart. Compare 180 Grit Aluminum Oxide Rectangular Polishing Stone Very Fine Grade, 1/2 Wide x 6 Long x 1/8 Thick. MSC# 05093893 Made in USA. In Stock.