Features: Precise focus adjustment by rotating the button: Atomstack Maker L1 Z-axis sliding lift mechanism for Atomstack laser engraver models. Precision structure: Double optical axis, four slider precision structure, precise control of height, every rotation, the Z axis will rise or fall 1mm. The Atomstack L1 Z-axis adjuster can be adapted to the Atomstack laser engraving machine range, with a height adjustment of 50 mm. Easy to operate: 35*10mm large size knob handle, easy to rotate. Lightweight: 150*60*17mm slim size, installed in the machine with a stable center of gravity, will not shake and will not reduce the operating speed. Specification: Model: L1 Material: Metal Product Size: 150*60*17mm Slide Stroke: 50mm Adaptable Laser Size: 33mm, 40mm, 51mm and 60mm Working Mode: Manual adjustment Package Size:195*105*50mm/7.6x4.1x2in Package Weight: 350g/12.3oz Packing List: 1 xL1 Z-axis Adjuster