Dirt Nap Gear BMF Hybrid Broadheads 100/125 gr. 3 pk. Silver. A proprietary spring blade-retention system remains closed at high speeds and opens instantaneously on contact without use of O-rings or retaining clips. The BMF Hybrid unleashes massive X cuts with pile-driving penetration thanks to 2.25" of cutting surface. Customize the broadhead's weight to 100 or 125 gr. using the patented modular weight system. Surgical-sharp 420J2 stainless steel blades. Aircraft-grade 7075 aluminum ferrule. Cutting diameter 1 1/4. Specifications for Dirt Nap Gear BMF Hybrid Broadheads: Manufacturer: Dirt Nap Gear Color: Silver Archery Application: Hiking Package Contents: Dirt Nap Gear BMF Hybrid Broadheads Dirt Nap Gear 850754005222: BMF Hybrid Broadheads 100/125 gr. 3 pk. Silver