I was having blade problems and when I went to the Ergonomic blade booth at the Sewing Expo (forgot their names) they told me not to buy the blades with the notches for the regular rotary cutters because they wear unevenly so now I make sure I buy bades with a round hole in the middle.
I will have to go back and look for the handle and see what else I can find. I bought the 10 packs of blades and they work great.
Cathy