Sight-in accurately with the professional boresighter kit from bushnell.The kit includes a graduated grid sighting reticle, three expandable arbors, and a carry case.The arbors allow you to use the boresighter with all calibers of weapon from.22 cal to.45 cal.Type: BoresighterCaliber: Multi-CaliberStyle: ArborMaterial: MetalQuantity: 1Battery: None