This arbor is used in conjunction with Aimshot's .223 Laser Bore Sight
This arbor is used for all of the following calibers:
- 264 Win, 300 Win, 7mm Mag, 300 Weatherby, 270 Weatherby, 7mm Weatherby, 340 Weatherby, 257 Weatherby, 8mm, .358 Norma Mag, .308 Norma Mag, .416 Rem Mag, 7mm Shooting Times Westerner