The Blue Laser Modual is designed for both 3D printer and CNC mill.  With 450nm wavelength, it is an effective tool for laser engraving and laser cutting.  There 4 powerful laser modual for choose, they can engrave and cut a variaty of materials.

Features:
Blue Laser Modual — Professional laser head with high speed and high stability. Bright blue-violet light, easy for locating when engraving.
Adjustable Focuse — Adjustable laser head, easy to adjust, ensure engraving with good quality and high efficiency.
Easy to Assemble — Small and compact, convenient and easy to install.
20W Carving Material — Wood type, some plastics, paper, bamboo, horn, thin leather (wallet), rubber stamp, tooth, PU, Printing paper, PVC, horn, crab shell,  lobster, mammoth, ivory, linden root, resin, spectacle lens, metal painted surface,those kinds of flammable materials.   And colored ceramics, colored aluminum, pebbles, etc.    Part of stainless steel, anodized, dark electroplating, swimming paint, baking paint, wood grain transfer aluminum. Coke cans, mobile phone back shell, etc.
20W Cutting Material — Within 3mm thick paper, leather, non-woven fabrics, flocking fabrics, aircraft wood, stickers, etc.    Non-transparent plastic sheet within 2mm Black acrylic sheet within 2mm

Specifications:
Laser Power: 5500mW/10W/20W/30W (Optional)
Material: Aluminum Alloy+Plastic
Light Color: Blue-violet
Wave Length: 450nm
Facula Form: Punctiform, Adjustable Focus(30W can not adjust focuse)
Input Voltage: 12V 2A

Item Size: 12*4*4cm / 4.72*1.57*1.57in
Package Size: 15*15*5cm / 5.9*5.9*1.96in
Item Weight: 307g / 10.83oz

Package List:
1 * Laser Head