Use this portable fishhook file to make the hook more incisive and easier to fish in this way. DURABLE MATERIAL & SUITABLE SIZE: SAMSFX fish hook sharpener is mainly made of diamond material,, 4" / 10CM long and 1/2" wide, groove size 1/16", which is the proper size for you to use in your daily life; Besides, the small and simple fish hook file is lightweight, so you can put it in your bag and carry out.
eBay