Dimension of insert : the standard 7/16 x 7/8 inch (11 x 22 mm) grip ring mounting to attach to most standard chair or stool bases; Suitable size can meet your needs; measure your size purchasing. Practical design: with solid PU structural glides design, can handle more weight on most of desk chairs, workshop chairs or any other stools, etc., black color also can easy to match different chairs. glides size: these glides are 2 inch in bottom width and 2 inch overall glide height, similar to most small chair casters. Overall glide height: 2 inches overall glide height when installed, fits for most small chair casters; This stool office chair glides can convert office chair with casters into a stationary chair without losing the chair height; check whether the product is suitable for your chair purchase. your floor: the glides replacement has bottom can your floor better, and the package includes felt pads also can an extra protection on floor surfaces., Weight: 0.66579603124 pounds, Manufacturer: Duendhd