For  5500mW/10W/20W/30W:

Upgrade Blue Laser Module with Lower Loss and Higher Precision 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:
Upgrade Blue Laser Module — Professional laser head have upgrade with a lower loss and higer precision and keep with high speed and high stability, at the same time prolong the laser modual's service time.  Bright blue-violet light, easy for locating when engraving.
Adjustable Focuse — Adjustable laser head, easy to adjust, more flexible use and ensure engraving with good quality and high efficiency.
Easy to Assemble Safety Use — Small and compact, convenient and easy to install.  Come with a protect goggles, ensure a safety working process.
5500mW 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.
5500mW Cutting Material — Within 1.5mm thick paper, leather, non-woven fabrics, flocking fabrics, aircraft wood, stickers, etc.

Specifications:
Color: Black/Red (optional)
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:
100*30*30mm/3.94*1.18*1.18in  (5500mW/10W)
99*40*40mm / 3.90*1.57*1.57in  (30W/20W)
Item Weight:
165g / 5.82oz  (5500mW)
170g / 6.00oz  (10W)
184g / 6.49oz  (20W)
221g / 7.80oz  (30W)

Package List:
1 * Laser Head
1 * Pretect Goggles
7 * Kraft Paper
1 * Bag of Installation Accessories
1 * Screwdriver

  For 40W:

40W upgrade Blue Laser Module with Lower Loss and Higher Precision, which is designed for both 3D printer and CNC mill.  With 448-462nm wavelength, it is 6-7 times faster and 3-4 times accuracy than the traditional laser module.  There 5 powerful laser modual for choose, they can engrave and cut a variaty of materials.

Features:
Applicable for All Metal Material — 40W high powerful laser module can provide better carve effect on paint and oxide layers and stainless steel. Compare with other brand our 40W laser module can even engrave metals without carbon content!
Longevity & Lower Loss — Upgrade 40W laser module with higher engraving speed, precision and stability meanwhile ensure a lower loss to prolong the laser module's service life.
Simple & Safety Use — Small and compact, convenient and easy to install.  Come with a protect goggles, ensure a safety working process.
40W Carving Material — It can engrave 201/304 stainless steel, titanium steel and anodized aluminum, stone, MDF, Balsa, wood, fabric, plastic, PCB, paper, bamboo, horn, leather, sponge paper, etc. Not engravable: copper raw materials, aluminum raw materials.
Cutting materials — Cutting plywood, cutting black acrylic board, leather, paper, etc.
Focus — Come with a red piece help to alignment the engraving distance between laser module and carving objects.

Specification:
Color: Black + Yellow
Laser Power: 40W
Material: Aluminum Alloy+Plastic
Light Color: Blue-violet
Wave Length: 448-462nm
Beam Shape: Dot, Using red focuse ausiliary pieces to adjust focuse distance.
Input Voltage: 12V 2A

Item Size: 110*40*40mm/4.3*1.6*1.6
Item Weight: 218g/0.5lb

Packing List:
1 * 40W Laser Head
1 * Pretect Goggles
9 * Kraft Paper
1 * Red Focus Auxiliary Accessory
1 * Bag of Installation Accessories
1 * Screwdriver