Yes, it has 2 pairs of tapped holes, diametrically opposite on a big steel disk about half an inch thick. One pair of holes is on a larger radius than the other. The blades start off about (Edited for accuracy:) 6" long. When you get to maximum depth setting with them mounted on the smaller swing radius, you move the blades and mounting bolts out to the larger radius. When you run out of depth setting using the larger radius, it's time for a new pair of blades. Do you know where you can get 1.5" wide, 16 gauge spring steel? I might use it more if I had a cheap source of blades. It does a great job of cutting concrete, but the blade wear rate gets pretty high when you do that.
Last edited by grumpy; 04/11/11 02:17 AM. Reason: Correct the length dimesion
