NOT STANDARD DIMENSION - (8.6 inch longer x 6 inch wide) with 1.1inch gap diameter and 2.5 mm tickness - Our mechanism features. Turn the guidance wheel to tighten or loosen (adjust) the forward backward tilt stress and circulation the arm for height. Fit for the vast majority of fuel cylinders. It is VERY IMPORTANT IMPORTANT IMPORTANT to measure your mounting gap dimensions before ordering. NOT STANDARD SIZE discuss with picture.OFFICE CHAIR MECHANISM REPLACEMENT LETS YOU RESTORE YOUR OLD CHAIR AND SAVE MONEY- Is your favourite office chair in unhealthy shape? Get your individual classic office chair substitute and make your chair seem to be new again quickly and effortlessly.If you are unsure about the gasoline cylinder, you also can update it with a 5-6 inch gasoline cylinder. Measure your outdated piece first, other sizes are available, to avoid an pointless return.EASY DISASSEMBLY AND ASSEMBLY- We have clear step by step photograph directions on listing page, so even a non-professional can set up this mechanism chair.You get everything you would like with the purchase so replacement is trouble free. It is way extra environmentally friendly, economical and pleasure to repair your favorite office or gaming chair.SUPERIOR QUALITY REPLACEMENT MECHANISM ORDERS- Get a new top rate high quality mechanism that fits maximum gaming chairs, govt chairs and workplace swivel chairs. It is significant to measure the scale of your mounting hole before ordering.This heavy responsibility tilt management mechanism withstands a heavy weight of 450 lbs. Enjoy smooth, quiet 360 diploma rotation on your workplace swivel chair. Also suits gas cylinder and lots of others.Colour: blackMaterial: metalPackage Contents:1 x workplace chair alternative partsOnly the above package content, different merchandise aren't included.Note: Light capturing and assorted displays could cause the colour of the article within the photograph somewhat varied from the real thing. The size allowed error is +/- 1-3cm.