Spend less time sighting in your new Crossbow, optic or iron sights with the Titan Laser Boresighter by Allen Company. The beam works with scopes and open sights. Batteries are included, turn the laser on and you are ready to start tuning your Crossbow with the Laser Boresighter. Features: Twist On / Twist Off, Comes with Batteries Brand: Titan Manufacturer Part Number: 60111 Assembled Product Weight: 0.2 lb Manufacturer: Allen Company Assembled Product Dimensions (L x W x H): 9.00 x 0.50 x 0.50 Inches