Grim Reaper Razorcut broadheads feature a Trocrazor tip with a cut on contact tip with mechanical blades for penetration to the max. Razorcut has a bone-splitting bulletrazor tip - single cut-on-contact tip blade mounted in a bullet point. 40-degree swept-back blade angle. No rubber bands or O-rings. Fastest-opening blades of any mechanical. Availabe in 75 & 100 grains. The 75 grain has a 1 1/8" cutting diameter, while the 100 grain comes in either a 1 3/8" or 1 3/4" cutting diameter. The tip blade did not curl! Now thats tough!. All Grim Reaper Razorcuts now come wit the tip blades made out of an ultimate tough steel with.030" thick mechanical blades.