... .Chrome/powder 4.PICC insurance gas spring/gas lift/adjustable gas spring/chair gas lift gas spring,chair gas ... Trip:50~260mm;3.Chrome/powder4.PICC insurance 5. Thick of tube:1.5, 2.0, 2.5mm6. Thick of ... outer pipe:1.5, 2.0mm7. Thick of Inner core:1.0mm8. ... of components, including: caster wheel, chair base, mechanical, plastic,seat cushion, armrest, back of a chair, and high class ...