Features 1、Compatibility: This z-axis lift device is suitable for TTS-55 Pro, TTS-10 Pro, TTS-20 Pro laser-engraver without modifying the device. Will not fit engraver without adapters or mod. 2、Focusing is More Convenient: Just turn the knob to adjust the height of the z-axis laser-module. It made adjustment of laser-so much easier. It can remove all excess play between the laser-and the project. 3、Quality Built: This device is well designed and constructed, very solid and the action is smooth, without backlash, very precise, it makes precise laser-adjustment very easy. 4、Adjustment Stroke: The maximum lifting stroke is 55mm, which enables the laser-to engrave thicker items, such as skateboards, wood etc. , 0.32 pounds (146g), does not affect the speed and accuracy of the XY axis of the engraver. 5、More Possible: If you want to update another brand of laser-engraver, you can modify the hole position or design the adapter and build the adapter with a 3D printer. Specification Features: Compatibility: This z-axis lift device is suitable for TTS-55 Pro, TTS-10 Pro, TTS-20 Pro laser-engraver without modifying the device. Will not fit engraver without adapters or mod. Focusing is More Convenient: Just turn the knob to adjust the height of the z-axis laser-module. It made adjustment of laser-so much easier. It can remove all excess play between the laser-and the project. Quality Built: This device is well designed and constructed, very solid and the action is smooth, without backlash, very precise, it makes precise laser-adjustment very easy. Adjustment Stroke: The maximum lifting stroke is 55mm, which enables the laser-to engrave thicker items, such as skateboards, wood etc. , 0.32 pounds (146g), does not affect the speed and accuracy of the XY axis of the engraver. More Possible: If you want to update another brand of laser-engraver, you can modify the hole position or design the adapter and build the adapter with a 3D printer. Specification: Colour: Black material: metal Package Size: 250x170x110mm/9.8x6.7x4.3in Package Weight: 2500g/88.1oz Packing List: 1 x Z-axis Lifting Module Kit Note: 1.Only the above package content, other products are not included. 2.Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Package List 1 x Z-axis Lifting Module Kit