Thank you all for the kind remarks. This uses the parts from an Excel Grip-it knife, with the plastic tube used for the handle thrown away. I got the knives off ebay, since there was a seller on there with a good price for a quantity. If I were only making one or two, I would have gotten the knives from Hobby Lobby or other craft store. The same thing can be done with the Xacto Gripster knife, but the Gripster will not allow the use of the blade cover that comes with the knife.