The BloodSport Gravedigger Extreme Cut-On-Contact Hybrid Mechanical Broadhead delivers maximum blood loss for easy-to-follow trails. A hybrid design that works with either compounds or crossbows, it features a set screw that lets you lock the mechanical blades out for fixed blade use. Led by its large 1-1/4 cut-on-contact main blade, it also deploys two large mechanical blades that deliver a huge 2-1/4 cutting diameter for easy-to-follow blood trails. BloodSports patented Blade Retention System holds these blades in place during flight without the use of rubber bands or O-rings to ensure field-point accuracy. 420 stainless steel blades anchored in a durable 7075 aircraft-grade aluminum ferrule. Per 3. Wt: 100 gr. Cutting dia: 2-1/4. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Mechanical Broadheads.