Features: brand new and high quality Adjust the local length of Laser-head. High-intensity laser- LD+FAC spot compression laser- module Engraving is faster and more accurate. Smaller light spot, more concentrated light energy. Support more engraving materials, attentive quality, exquisite details. Specifications: Brand:Twotrees Totem S Item: Laser- for Head Adjustable Module Mounting Bracket Set Item Type: Hardware Parts/Machine Parts Model Number: Laser- for Head Mount Size:approx 132x34.5mm/5.2x1.36in(Pls see the pictures for more details) Weight:200g/0.44lb Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 Set Laser- for Head Adjustable Module Mounting Bracket Set