The Blue Laser Module is designed for CNC mill. With 450nm wavelength, it is an effective tool for laser engraving and laser cutting. they can engrave and cut a variaty of materials. Features: Blue Laser Module — Professional laser head with high speed and high stability. Bright blue-violet light, easy for locating when engraving. Adjustable Focus — Adjustable laser head, easy to adjust, ensure engraving with good quality and high efficiency. Easy to Assemble — Small and compact, Carving Material —Wood, paper, leather, bamboo, plastic, rubber, alumina, stainless steel,etc. Specifications: Effect Laser Power: 20W Material: Aluminum Alloy+Plastic Light Color: Blue Wave Length: 450nm Facula Form: Punctiform, Adjustable Focus Input Voltage: 12V 2A Interface Parameter: Support TTL signal controls power Item Size: 9.5*3.5*3.5cm Package Size: 14*6.2*6.2cm Item Weight: 146g Package List: 1 * Laser Head 1 * Laser Module Adapter Board commander ici : /