Slicing Bananas with knife is not easy if you are going to cut dozen of them. Hutzler 571 Banana Slicer make this all quick and safe as against using knife. In one motion whole banana is sliced into even pieces.
With safety factored in, you can let kids use it to slice their own bananas. For sure one handy kitchen tool for bananas – ready for banana slicing in one shot? $3.59