Rotatable Seat & Adjustable Height: Adopt a 360° rotating seat, this bar stool set spares you from inconvenient standing up or turning around when chatting with others. The adjustable seat height ranges from 21.7-29.9″, ideal for counter tables and bar tables of 32-40″ high Comfortable Seating Experience: This modern bar stool set embraces a 14.6″ high backrest, a 2.8″ thick foam cushion, and a half-round footrest, offering ample support for your lower back and legs and ensuring lasting comfort during long-time sitting Expanded Base, Improved Safety, Longer Service: The electroplated metal base of this swivel bar stools set is enlarged to 16.1″ diameter, providing better weight distribution and durability. The anti-slip rubber ring further upgrades stability and safety Extra Cozy: Each part of this swivel bar stool set is about your cozy experience. The 2.8″ thick high-density foam-padded seat and a 14.6″ high backrest are covered by soft PU Leather, having your body well-supported, meanwhile ensuring the seat uneasy to deform Versatile: The harmonious integration of minimal, elegant design and reliable performances makes this bar stool set an ideal addition for different scenes, such as dining room, kitchen, office, hotel, restaurant, and meeting room 4pcs Adjustable Modern PU Leather Swivel Office Chair with BackrestQuick overview:Adjustable office chair is constructed of premium PU, foam, and iron, with solid structure holding up to 330 lb, sturdy and for long-term use. Height adjustable range is 36.5-44.5’’, which can meet your varied needs. 360°swiveling design is convenient for you to move the chair or fetch files/books, very practical. Stylish design makes it compatible seamlessly with any décor.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 part.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 to the connection between the air cylinder and the claw base for lubricating.Specifications:Material: PU, foam, IronSize: 17 x19.5 x 36.5-44.5 ’’ (LxDxH)Base diameter: 16’’Maximum load bearing: 330 lbG.W.: 71.2 lbQuantity: 4pcsColor: Brown4 x Bar Chair4 x Assembly Instructions