Check the listing for details. 18pcs Diamond Chainsaw Sharpener Bits 5/32" 3/16" 7/32" Chain Saw Grinder. Condition: New. Listed at 17.81 USD. Size - 18pcs mini chainsaw chain sharpener, 5/32" 4mm 3/16" 4.8mm 7/32" 5.5mm diameter, 3mm shank dia.Material - Made of titanium plated diamond, high hardness and durable, excellent grinding effect with long service life, not easy to wear off.Application - These grinding heads are good for chainsaw teeth sharpening, also for metal surface polishing, wood and jade shaping, electric saws, glass, steel, and more.Feature - The chain grinding bits are easy to install, used with an electric grinder to easily sharpen your saw chain.Note - With finely and evenly diamond grains on the drill bit, the chainsaw grinding file is also suitable for high-precision work.