【PREMIUM QUALITY】- The black office chair base contains thickened metal construction. 28 inch, 350lbs; It is wear-resistant, anti-scratch, and anti-rust. 360-degree swivel action for easy transfer.
【HEAVY-DUTY SEAT PLATE】- The seat plate has a fixed mounting hole of 6″ x 10″. It rated for up 320 pounds. The extended service life offered. The practical chair gas lift piston is ideal for various office chairs.
【PNEUMATIC GAS CYLINDER】- The solid pneumatic gas cylinder provides a good load capacity of 350 lbs. It has a 5″ travel from lowest to highest. The adjustable height of the cylinder: 4 inches (100 mm).
【ROLLING CASTER BASE】- The diameter of 5 casters is 60 mm. Each caster rated for up 110 lbs. The friction is small with noiseless function. The anti-skid caster is convenient to move. The damage to the floor reduced.
【EASY TO ASSEMBLE】- It is extremely simple and convenient to install and operate. Complete accessories all parts you need under the seat are equipped.