The unique design of the file cross-section allows the sharpening of a multitude of different item The sharpening rod can be retracted and stored within the anodised aluminium case Simply twist the sleeve to lock/release the tool Use the Flat Face of the tool to produce a razor sharp edge on any number of difficult to sharpen tools Use the V shaped grooved channel for precision point sharpening e.g. darts, fishhooks, scribers, bradawls etc Use the curved side to sharpen serrated blades or to smooth any other curved surfaces even glass chips Some suggested uses: Knives - Chisels - Multitools - Scissors - Kitchen Utensils - Secateurs - Bradawls - Fish Hook - Darts - Arrows Use as utility file e.g. model making, shaping metal or wood. Deburring sharp edges Pen size with pocket clip. Length approx 5.5 inches closed, 8 inches open Non-slip knurled Finger Grip surface on chuck for positive control in use Description: Weight: 3.5 oz. (100 g) Length Overall: 9.06" (23 cm--including hand shank ) Diamond dust sharpener Length: 5.6" (12cm) Material: Stainless Steel Sharpening Rod with Diamond Dust Coating Package Content: 1x Diamond Grit Sharpener Pen-File hunting Kitchen Knife / Fish Hook / Sharpner Label: Yes Washing Care: Hand wash cold, Iron at normal temperature <150C, Dry clean, Line dry in the Shade, Do not bleach