This is a great set, but you need to understand what you're getting. This kit does NOT include the #80 dovetail bit that comes with the accessory. It comes with bit #75, which people confuse with bit #80 and think it doesn't match. If you need a Whiteside #80 bit you will need a D8-500X8 (not included in the kit). Even bits 140 and #160. I haven't used all the bits yet, but the ones I made worked very well, with no breaks. I use the old D4 device.