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【EASY INSTALLATION】- It is extremely simple and convenient to install and operate. Only four steps are required as the picture
【HEAVY DUTY BOTTOM PLATE】- Standard gas cylinder. The seat plate has a fixed mounting hole, mounting hole distance: 10.2" x 6". Twist hand wheel to tighten or loosen (adjust) backward tilt tension
【UNIVERSAL CASTERS】- The diameter of 5 casters is 60 mm. The friction is small with noiseless function
【STANDARD GAS CYLINDER】- It has a 5" travel from lowest to highest. The adjustable height of the cylinder 4”
【GOOD QUALITY】- The chair base is made for Heavy Duty Plastic, wear-resistant, and rust-proof. 28" in diameter ideal for executive Tilt/Swivel style chairs. 360-degree swivel action for easy transfer