75 grain features .030 thick blades with a 1 ¹⁄8 cutting diameter. 85, 100 & 125 grain features .035 thick blades with 1 ³/8 cutting diameter. 100 & 125 grain extra blades feature .035 thick blades with 1 ¾ cutting diameter, the Whitetail Special features .035 thick blades and a massive 2 cutting diameter. All packaged three packs with one free practice head.