Pencil knife ~ plastic ~ five blades ~ coloured
Craft knife ~ pencil shaped ~ replaceable blades ~ five spare blades ~ all metal
We sell a very similar knife with a metal handle, at a higher price. We have not tested this plastic handled knife to destruction, but in our experience we feel it likely that the plastic collar will break even if not over-tightened. We would recommend early reinforcement, or (preferably) spend a little more on the metal handled version.