1. Polymer oily wear slider 2. Tubing explosion-proof device 3. 2mm cold-tolled plate slide, less resistance, and more smooth the rise and fall, replaceable and easy maintenance for late. 4. Integral base, easy to install, and horizontal. 5. Ce standard 3 insurance gear design 6. Adopts q345 international solid steel, avoid of deformation permanently. 7. Adopts q345 international 25mm solid steel, avoid of deformation permanently. 8. 4 meters long 6mm thickness 50 �? 120mm strengthen the heavy square tube.
