4.2mm / .166 ID Micro diameter shafts coupled with the Defender insert system Provides increased penetration and unmatched durability for your arrow setup 4.2mm (ID) shaft has less wind drift in flight, resulting in improved accuracy compared to SD shafts Shafts Include Nexxus Defender Outserts in 50-grain Aluminum Interlocking 7075 Aluminium Pin & Sleeve combination for ultimate arrow protection Dual locking threads ensure precision alignment between your arrow, outsert, and broadhead for maximum accuracy and strength Accepts standard 8-32 thread pitch points or broadheads Spine specific sleeve fits the OD of the Infinity arrow shaft for precision fit Add more F.O.C. with 75-grain weight Nexxus Defender Titanium options sold separately Weight: 250 spine | 11.1 gpi | OD 6.41mm | ID 4.2 mm (.166") 300 spine | 10 gpi | OD 6.24 mm | ID 4.2 mm (.166") 350 spine | 8.87 gpi | OD 6.07 mm | ID 4.2 mm (.166") 400 spine | 8.05 gpi | OD 5.9 mm | ID 4.2 mm (.166") 500 spine | I.D. 4.2 mm (.166")
