Overview: This is a brand new, high quality 12mm KH1228 linear bushing for your CNC machinery. This is a KH1228 linear bushing Specification: Type: KH1228ID: 12mm Number of ball rows: 5 Weight: 18g Inner diameter: 12mm Outer diameter: 19mm Length: 28mm Dynamic: 63c (kgf) Static: 52 Co (kgf) What's in the box: 1KH1228 linear