The entire outer flare cuts like a monster. My problem is the centering cap. The product arrived and the first hole was too short and broke within 3 minutes. I was frustrated Because these cores are the beginning of my work, I called and searched. Everyone told me I was crazy, it's a one-piece bat. Eventually I was directed to my local Dewalt service center. They knew I needed it, but we're out of stock. They said 1 week. In the meantime I used a separate drill bit for the pilot and fitted myβ¦