This laser calibrator is made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistant, and designed for long service life. Featuring high accuracy and an adjustment-free design, the calibrator utilizes infrared laser light with a straight tube for convenient and precise alignment. The shipment includes a full set of accessories, ready to use upon arrival.Features:- Constructed from high-grade aluminum alloy, providing durability, light weight, and corrosion resistance- Infrared laser technology delivers bright, clear, and visible light over long distances, enhancing calibration precision- Precision-engineered with a straight tube design for improved alignment accuracy and ease of use- Simple and sleek battery compartment design; tail cap opens by unscrewing for easy battery replacement- Complete accessory kit included for immediate use and enhanced functionalitySpecifications:- Name: Laser Calibrator- Material: Aluminum alloy- Color: Red, Green (optional)- Battery: 1 x CR2 battery, 3V, 800mAh (included)- Power: <5mW- Diameter: 4.2mm- Item Size: 178 x 18 x 18mm / 7.01 x 0.71 x 0.71in- Item Weight: 60g / 2.12oz- Package Size: 195 x 104 x 30mm / 7.80 x 4.09 x 1.18in- Package Weight: 131g / 4.62ozPacking List:- 1 x Laser Calibrator- 1 x Screwdriver- 12 x Adjustable Adapter- 1 x Set of Screws- 1 x Wrench Note: Please allow 1-3 mm error/1-3g weight error and actual product color may vary due to lighting conditions.