Feature: 1. Good Collimator: The collimator can direct align various types of aiming line by using infrared ray in straight pipe calibration. 2. Higher Accuracy: Convenient for adjusting mechanical or optical photoelectric sights, and the cold calibration has high accuracy. 3. Practical Using: This instrument can be applied to adjust the zeroer in a short time at emergency for more accurate operation. 4. Aluminium Alloy: High density aluminium alloy material has been through fine workmanship, not easy to deform and also very durable. 5. Simple Carrying: Comes with a light weight and a compact size as well, both the storage and carrying are very convenient for work. Specification: Item Type: Laser Bore Sighter Material: Aluminium Alloy Battery Type: Cell Battery. Package List: 1 x Laser Bore Sighter Kit