PU Leather Low Back Armless Desk Chair Ribbed Armless Swivel Task Chair Office Chair with WheelsThis armless chair is constructed of deluxe PU leather, high elastic foam, SGS certified gas lift and strong chrome finish base, durable plastic frame and base. Solid structure with a high load capacity that can hold up to 120 kg/ 265 lb, this chair is strong and sturdy enough for your daily use. 360° swivel casters and seat help fetch things and multi-tasking more easily. The elegant ribbed task chair will be a nice-looking addition to your bedroom, study, dorm room, office, etc. The armless design allows this chair to be slid under your makeup table, computer desk, writing desk, office desk without any difficulty.How to Dismantle Pneumatic Cylinder?Step 1: Disassemble the seat from the base with a screwdriver.Step 2: Use a rubber hammer to tap on the center of the part that connects the seat and the air cylinder. Repeat 5-6 times until the air cylinder comes off the parts.Step 3: Turn over the base. Use the rubber hammer to tap on the center of the base to loosen and disassemble the air cylinder from the base.NOTE: We recommend applying edible oil/engine oil/rust inhibitor to the connection between the air cylinder and the claw base for lubricating.Specifications:- Color: Black- Material: PU Leather + Composite Board + Foam + Chrome finish Iron- Overall Dimension: 19 x 19 x (31-36.6)’’ (LxWxH)- Adjustable Seat Height: 16.3-22.2’’- Seat Size: 16.9 x 17.9 x 2.1’’ (LxWxThickness)- Back Size: 14.8 x 17.9’’ (LxW)- Max. Weight Capacity: 265 lb- N.W.: 14.8 lb- G.W.: 17.3 lbNote: For your safety, please do not stand on the chair.1 x Low Back Armless Chair1 x Instruction