For 1/2′′ (12.7mm) shocks, this includes all Fox (except the Micro Brain), Rockshox post 2010, Cane Creek (Inline Shocks Only), DVO etc.. Includes a thrust bearing for low friction operation. Many of the bolt operated DU Bush tools have a tendency to twist during fitting or they damage the DU push as it is pressed in.. Machined in house in Lancashire..