SMC's CLK2 series is?a perfect choice for holding applications in either a clamped or unclamped state.? CLK2 cylinders have a compact lock mechanism which minimizes the extension of the length dimension (2mm shorter), while maintaining the mounting interchangeability with the CLK1 existing product line.? The CLK2 is capable of being locked at any position within the entire stroke.? A dedicated solenoid valve is not required for unlocking, thus reducing the initial costs and replacement of the existing equipment.