Feature:1. Made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistance, and with long service time.2. Infrared calibrator, laser light has a long-distance, bright, and clear light, which better helps calibration adjustment.3. Highly accurate and adjustment-free design, the calibrator utilizes infrared light, with a tube straight in for a more convenient and precise adjustment.4. The battery compartment design is simple and beautiful, the tail part can be opened by unscrewing, convenient and practical.5. 8-hole adjustable adapter, suitable for 0.177 to 0.50 caliber.Specification:This laer calibrator is made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistance, and with long service time. Highly accurate and adjustment-free design, the calibrator utilizes infrared light, with a tube straight in for a more convenient and precise adjustment. 8-hole adjustable adapter, suitable for 0.177 to 0.50 caliber.Features:Made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistance, and with long service time.Infrared calibrator, laser light has a long-distance, bright, and clear light, which better helps calibration adjustment.Highly accurate and adjustment-free design, the calibrator utilizes infrared light, with a tube straight in for a more convenient and precise adjustment.The battery compartment design is simple and beautiful, the tail part can be opened by unscrewing, convenient and practical.8-hole adjustable adapter, suitable for 0.177 to 0.50 caliber.Specifications:Name: Laser Calibrator Material: aluminum alloy Color: red, green (optional)Battery: 1 * CR2 battery (included)Power: <5MWDiameter: 4.2mmItem size: 166 * 18 * 18mm / 6.54 * 0.71 * 0.71inItem weight: 60g / 2.12ouncePackage size: 195 * 104 * 30mm / 7.80 * 4.09 * 1.18inPackage weight: 131g / 4.62ouncePacking List:1 * Laser Calibrator 1 * Screwdriver8 * Adjustable Adapter2 * Screw1 * WrenchPackage List:1 * Laser Calibrator 1 * Screwdriver8 * Adjustable Adapter2 * Screw1 * Wrench