Check this affiliate link for the current price (Amazon): https://geni.us/f2fFW9e

Here is the info listed on the Amazon product listing:

Corona, AC 8300, Garden Tool, Blade Sharpener, 1-Pack, Red

About this item
IDEAL FOR SHARPENING ALL STRAIGHT BLADES: Excludes saw blades.
SMALL, CONVENIENT SIZE: Easily fits in a pocket or tool bag.
NON-SLIP GRIP FOR EASY USE: Rubber grip helps prevent slipping, keeping you safe while sharpening.
5" SUPER CARBIDE FILE: File is durable and designed to be comfortable to hold.

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