SAMSFX Fishing Anglers Vest Pack Tool Gear Assortment Combo Tool Kit 2 pieces hook sharpening file in pack, double sided hone for sharping hooks and fish knives Stainless steel and dual diamond grit surfaces, 4" / 10CM long and 1/2" wide,come in pvc sheath Two grooves on the medium (600 grit) side, and one groove on fine (800 grit) side Rubber coated handle for sure grip and control, lanyard loop sling for easy carry and storage Keep yours hooks sharpest all times, neccessary in your fishing tackle bag