30Pcs Chainsaw Sharpener Stone 4.0mm 4.8mm 5.5mm Emery Grinding File 3mm Shank-

30Pcs in Total: Including 3 kinds of the grinding bit, 4.0mm, 4.8mm and 5.5mm, and each type has 10pcs, so there are 30pcs. Item Type: Chainsaw Sharpener. 30 x Chainsaw Sharpener. 4mm / 0.16in (approx.).

eBay