Features [Excellent Polishing] Made of high-quality abrasive particles with uniform and delicate texture, which provides excellent polishing performance for a sharp and efficient chainsaw blade. [High Hardness] These sharpening bits have a hard texture, excellent rust and wear resistance, sturdy and lightweight, not easy to break, deform or bend. [Main Purpose] The stone is primarily designed for use with a portable chainsaw sharpener and is often used for sanding and sharpening chainsaw chains. [Versatile Application] These whetstones are ideal for grinding and carving various pieces such as jade stones, ceramics, glass, hard alloys and stones. [Sufficient Quantity] You will receive 5 pieces whetstones, allowing for easy carrying and storage, ensuring you have sufficient supply for daily use and meeting your replacement needs. Specification: Item Type: Chainsaw Sharpening Stone Material: emery Blade diameter: approx. 4mm/0.16inch Blade length: approx. 17mm/0.67inch Shaft diameter: approx. 6mm/0.24inch Thread diameter: approx. M5 Package List: 5 x Chainsaw Sharpening Stones 2 x Nuts 1 x Wrench Package List 5 x Chainsaw Sharpening Stone 2 x Nuts 1 x Wrench